Inorg Flashcards
Democritus
All matter is made up of indestructive units called atoms
Example sentence: Democritus was an ancient Greek philosopher who proposed the concept of atoms.
Max Planck
Proposed the idea of quantization
John Dalton 4
Chemical reactions involve reorganization of the atoms
John Dalton 1
Each element is made up of atom
John Dalton 2
Atoms of a given compound are identical
John Dalton 3
Compounds are formed when atoms combine with each other
Frederick Soddy
Discovered that there appeared to be more than one element at each position on the periodic table
Margaret Todd
Coined the term isotope
Dmitri Mendeleev
Created the periodic table based on the periodic functions of their atomic weight
Richard Abegg
Found that noble gases have stable electron configurations
James Clerk Maxwell
Proposed the theory of electromagnetism and made connection between light and electromagnetic waves
Albert Einstein
Created the theories of relativity and hypothesized about the particle nature of light
George Stoney
Proposed that electricity was made up of discrete negative particles called electrons
Hans Geiger
Invented a device that could detect alpha particles
Sir William Crooke
Demonstrated in his experiments that cathode rays have a negative charge
Robert Millikan
Determined the charge of an electron through his oil drop experiment
Eugene Goldstein
Used cathode ray tube to study canal rays which had electrical and magnetic properties opposite of an electron
Ernest Rutherford
Performed alpha particle experiment and established that the nucleus was very dense very small and positively charged
Wilhelm Roentgen
Discovered that certain chemicals glowed when exposed to cathode rays called X-rays
Henry Moseley
Discovered that the number of protons in an element determines its atomic number
Henri Becquerel
Discovered radiation by studying the effects of X-rays on photographic film
Neils Bohr
Developed Bohr atomic model with electrons travelling in orbits around the nucleus
Sir Joseph John Thompson
Used cathode ray tubes to determine the charge to mass ratio of an electron
Louis de Broglie
Proposed that electrons have a wave-particle duality
Ernest Rutherford 2
Discovered alpha beta and gamma rays in radiation
Erwin Schrödinger
Developed the Schrödinger equation which describes how the quantum state of a system changes with time
Pierre and Marie Curie
Theorized that radioactive particles cause atoms to break down releasing radiation that take form in energy and subatomic particles
Pierre and Marie Curie 2
Discovered the radioactive elements Polonium and Radium
Antoine Lavoisier
Father of Modern Chemistry
Antoine Lavoisier 1
Named oxygen and proved that water is a compound of hydrogen and oxygen
Antoine Lavoisier 2
Conservation of mass in a chemical reaction
Antoine Lavoisier 3
Introduced a new system of nomenclature where each substance was given a single name which described its composition
Amedeo Avogadro
Formulated the Avogadro’s law and Avogadro’s number 6.022x10^23
Jons Jakob Berzelius
Isolated new elements and developed a chemical notation system using letters and numbers
John Dalton 5
Created 36 chemical symbols
Dalton’s Billiard Ball Model
First to describe atoms in a modern scientific sense
Thomson’s Plum Pudding model
Showed the existence of protons and electrons
Rutherford’s nuclear model
Showed the nucleus
Bohr’s planetary model
Showed energy levels
Schrödinger’s electron cloud model
Showed subshells and shells are actually orbitals
Chadwick
Existence of neutrons
Mass number
Number of protons and neutrons in an atom
Atomic number
Number of protons in an atom
Atomic symbol
Abbreviation used to represent atom in chemical formulas
Francis William Aston
Discovered isotopes
Johann Dobereiner
Proposed the law of Triads where the middle element in certain triads had an atomic weight that was average of the other two members
John Newlands
Law of Octaves where every eighth element shared similar properties
Lothar Meyer
Studied the relationship of the atomic volume and relative atomic mass of 28 elements
Dmitri Mendeleev 2
Formulated Periodic Law and made a periodic table of 63 known elements where their properties are periodic functions of their atomic masses
Antonius van den Broek
First suggested that the number of charges in an element’s atomic nucleus is exactly equal to the element’s place on Mendeleev’s table
Henry Moseley
Discovered atomic number and its relationship between atomic mass
Glenn Seaborg
Discovery of 10 transuranium elements
Glenn Seaborg 1
Had an element named after him while he was still alive
Strontium fireworks
Red
Calcium fireworks
Orange
Sodium Fireworks
Yellow
Barium fireworks
Green
Copper fireworks
Blue
Copper and strontium fireworks
Purple
Iron fireworks
Gold/light yellow
Aluminum fireworks
Silver and white
Magnesium fireworks
White
Lithium fireworks
Red
Cesium flame color
Blue violet
Rubidium flame color
Red to violet
Glenn Seaborg
Had an element named after him while he was still alive
Example: Seaborgium (Sg)
IUPAC
International Union of Pure and Applied Chemistry
Alkali metals
Lustrous soft and highly reactive metals ready to form +1 cations and found naturally only in salts
Alkaline earth metals
React with water to form alkaline hydroxides readily lose valence to form +2 cations
Transition metals
Less reactive than group 1 and 2 metals have higher melting points and densities
Boron group or Icosagens
Have low melting points and poor hardness and react with oxygen to form oxides
Carbon group or Crystallogens
Has four valence electrons form hydrides with hydrogen tetrahalides with halogens and variety of oxides with oxygen
Nitrogen group or Pnictogens
Have five valence electrons all are solid except the first element
Oxygen group or Chalcogens
Have six valence electrons and electronegative nonmetals react with metals to form -2 ions
Halogens
All are reactive nonmetals have seven electrons and only group that contains solid liquid and gas (I and As are solids Br is liquid and F and Cl are gases)
Noble gases
Very low chemical reactivity and colorless gases but exhibit colors when ionized
6 commonly recognized Metalloids
B, Si, Ge, As, Sb, Te
Allotrope
One of two or more distinct forms of an element
Alfred Stock
Stock nomenclature where oxidation states are indicated in parentheses by Roman numerals
Cyanide formula
CN-
Cyanate formula
OCN-
Carbonate formula
CO3^2-
Bicarbonate
HCO3 -
Oxalate
C2O4 ^2-
Acetate
CH3COO-
Borate
BO3^3-
Arsenate
AsO4^3-
Silicate
SiO4^4-
Permanganate
MnO4 -
Nitrite
NO2 -
Nitrate
NO3 -
Hydroxide
OH-
Peroxide
O2^2-
Thiocyanate
SCN-
Sulfite
SO3^2-
Bisulfite
HSO3 -
Sulfate
SO4^2-
Bisulfate
HSO4 -
Thiosulfate
S2O3^2-
Phosphite
PO3^3-
Biphosphite
HPO3^2-
Dihydrogen phosphite
H2PO3 -
Phosphate
PO4^3-
Biphosphate
HPO4^2-
Hypochlorite
ClO-
Chlorite
ClO2 -
Chlorate
ClO3 -
Perchlorate
ClO4 -
Hypobromite
BrO-
Bromite
BrO2 -
Bromate
BrO3 -
Perbromate
BrO4 -
Hypoiodite
IO-
Iodite
IO2 -
Iodate
IO3 -
Periodate
IO4 -
Chromate
CrO4^2-
Dichromate
Cr2O7^2-
Hydrates
Compounds that have specific number of water molecules attached to them
Binary acids
Contains a hydrogen and an anion
Oxyacids
Contains a hydrogen and an oxyanion
Magnesia
MgO
Lime
CaO
Alumina
Al2O3
Silica
SiO2
Caustic soda
NaOH
Caustic potash
KOH
Milk of magnesia
Mg(OH)2
Slaked Lime
Ca(OH)2
Baking soda
NAHCO3
Soda ash
Na2CO3
Washing soda
Na2CO3 • 10H2O
Pearl ash
K2CO3
Magnesite
MgCO3
Calcite
CaCO3
Dolomite
CaMg(CO3)2
Siderite
FeCO3
Glauber’s salt
Na2SO4 • 10H2O
Epsom salt
MgSO4 • 7H2O
Plaster of Paris
CaSO4 • 1/2 H2O
Gypsum
CaSO4 • 2H2O
Oil of vitriol
H2SO4
Blue vitriol
CuSO4 • 5H2O
Green vitriol
FeSO4 • 7H2O
White vitriol
ZnSO4 •7H2O
Diborane
B2H6
Silane
SiH4
Phosphine
PH3
Hydrogen sulfide
H2S
Justus Von Liebig
Identified the first
Oil of vitriol
H2SO4
Sulfuric acid
Blue vitriol
CuSO4 • 5H2O
Copper(II) sulfate pentahydrate
Green vitriol
FeSO4 • 7H2O
Iron(II) sulfate heptahydrate
White vitriol
ZnSO4 • 7H2O
Zinc sulfate heptahydrate
Diborane
B2H6
Diborane is a colorless, highly reactive gas
Silane
SiH4
Silicon tetrahydride
Phosphine
PH3
Phosphine is a colorless, flammable gas
Hydrogen sulfide
H2S
Hydrogen sulfide is a colorless gas with a characteristic odor of rotten eggs
Justus Von Liebig
Identified the first example of isomerism and that nitrogen is an essential plant nutrient
Chemist and principal founder of organic chemistry
Friedrich Wöhler
Accidentally synthesized urea and co-discoverer of Be and Si
German chemist known for his discovery of the synthesis of urea
August Kekulé
Structure of benzene’s ring shaped structure
German chemist who proposed the structure of benzene
Kathleen Lonsdale
Used X-ray crystallography to prove the benzene ring’s structure
Irish crystallographer and first woman tenured professor at University College London
Linus Pauling
Known for his work on chemical bonding and proposed the Pauling electronegativity scale
American chemist and two-time Nobel Prize winner
Michael Faraday
Faraday’s constant 96485 C/mol
English scientist who contributed to the fields of electromagnetism and electrochemistry
Edward Frankland
Pioneers of organometallic chemistry and pioneered the concept of combining power or valence
English chemist known for his work on valence theory
Jacobus Henricus van’t Hoff
First winner of the Nobel prize in Chemistry and one of the founders of physical chemistry laid foundation for stereochemistry
Dutch physical chemist and first winner of the Nobel Prize in Chemistry
Gilbert Lewis
Lewis structure
American physical chemist known for his concept of electron pairs
Erick Hückel
Developed the Hückel method of approximate molecular orbital calculations on π electron systems
German physical chemist and physicist
Victor Grignard
Discovered Grignard reagent and reaction
French chemist and Nobel Prize winner
Emil Fischer
Discovered Fischer esterification developed Fischer projection and hypothesized lock and key mechanism of enzyme action
German chemist and Nobel Prize winner
Hybridization
Combination of two or more atomic orbitals to form the same number of hybrid orbitals each having the same shape and energy
Concept in chemistry to explain the geometry of molecules
As bond length increases
Bond strength decreases
Inverse relationship in chemical bonds
Nonpolar bond
Electronegative difference is less than 0.4
Type of covalent bond with equal sharing of electrons
Ionic bond
Electronegative difference is 2.0 or more
Type of bond formed between a metal and a non-metal
Polar covalent bonds
Electronegative difference between 0.4-1.7
Type of covalent bond with unequal sharing of electrons
Inductive effect
The pull of electron density through sigma bonds caused by electronegativity difference of atoms
Effect in organic chemistry that influences the distribution of electrons
Spirocyclic
Two rings share one atom, has the prefix spiro[x.y] where x is smaller
Type of bicyclic compound
Fused bicyclic
Two rings share two atoms in one bond, bicyclo[x.y.0] where x is bigger
Type of bicyclic compound with shared atoms
Bridged bicyclic
Two rings share three or more atoms, separating the two bridgehead atoms by a bridge containing at least one atom, bicyclo[x.y.z] where x is bigger and z is number of bridgehead atoms
Type of bicyclic compound with a bridge
Functional group priority
Alkyl halide < ether < alkane < alkyne < alkene < amine < alcohol < ketone < aldehyde < nitrile < amide < ester < carboxylic acid
Order of priority for functional groups in organic chemistry
Wavelength
Distance between identical points on consecutive waves
Physical property of a wave
Amplitude
Distance between origin and crest or trough
Measure of the height of a wave
Frequency
Number of waves that pass per unit time
Measure of the rate of wave oscillation
Speed
Wavelength times frequency
Relationship between wavelength and frequency in waves
Speed of light
3x10^8 m/s
Constant speed of light in a vacuum
Blackbody radiation
Relationship between an object’s temperature and the wavelength of electromagnetic radiation it emits
Thermal radiation from a perfect absorber and emitter of electromagnetic radiation
Planck’s equation
E = hv = (hc)/lambda
Equation describing the energy of a photon
Planck’s constant
h= 6.626x10^-34 J•s/particle
Physical constant used in quantum mechanics
Indium flame color
Blue
Color of flame produced by burning indium
Lead flame color
Light blue
Color of flame produced by burning lead
Arsenic flame color
Blue
Color of flame produced by burning arsenic
Sulfur flame color
Blue
Color of flame produced by burning sulfur
Radium flame color
Crimson red
Color of flame produced by burning radium
Antimony flame color
Pale green
Color of flame produced by burning antimony
Selenium flame color
Azure blue
Color of flame produced by burning selenium
Tin flame color
Blue-white
Color of flame produced by burning tin
Tantalum flame color
Blue
Color of flame produced by burning tantalum
Zinc flame color
Blue-green
Color of flame produced by burning zinc
Tungsten flame color
Green
Color of flame produced by burning tungsten
Yttrium flame color
Carmine crimson or scarlet red
Color of flame produced by burning yttrium
Zirconium flame color
Mid/dull red
Color of flame produced by burning zirconium
Photoelectric effect
Irradiating a metal surface causes ejection of electron
Phenomenon where light causes emission of electrons from a material
Work function
Minimum energy required to remove electrons from the metal surface
Energy required to remove an electron from a material
Threshold frequency
Minimum frequency multiplied by Planck’s constant to obtain work function
Frequency of light required to overcome the work function of a material
Principal quantum number
n main energy level and distance if electrons from nucleus
Quantum number in atomic theory indicating main energy levels
Azimuthal quantum number
l energy subshells and shape of orbitals
Quantum number indicating energy subshells in an atom
Magnetic quantum number
Number of orbitals in subshells and possible orientation of orbitals in space
Quantum number indicating orbital orientations
Spin quantum number
Movement of electron around its own axis clockwise and counterclockwise
Quantum number indicating electron spin
Aufbau Principle
Building up principle orbital with lower energy is filled up first
Principle in chemistry for filling electron orbitals
Madelung’s rule
Energy increases with increasing n + 1
Rule for determining electron configurations
Hund’s rule of Maximum Multiplicity
For degenerate orbitals electrons must first occupy them singly with parallel spin before filling with pairs
Rule for filling electron orbitals
Pauli’s exclusion principle
No two electrons can have the same set of quantum numbers
Principle in quantum mechanics
Chromium electron configuration
[Ar] 4s1 3d5
Electron configuration of Chromium
Molybdenum electron configuration
[Kr] 5s1 4d5
Electron configuration of Molybdenum
Copper electron configuration
[Ar] 4s1 3d10
Electron configuration of Copper
Silver electron configuration
[Kr]
Electron configuration of Silver
Hund’s rule of Maximum Multiplicity
For degenerate orbitals electrons must first occupy them singly with parallel spin before filling with pairs
Example: In the 2p subshell, each electron will first occupy a separate orbital before pairing up
Pauli’s exclusion principle
No two electrons can have the same set of quantum numbers
Chromium electron configuration
[Ar] 4s1 3d5
Molybdenum electron configuration
[Kr] 5s1 4d5
Copper electron configuration
[Ar] 4s1 3d10
Silver electron configuration
[Kr] 5s1 4d10
Slater’s rule
Used to calculate the shielding constant
Lanthanide contraction
Additional electrons do not add to the atomic size in the 5th and 6th period
Ionization energy
Energy required to remove an electron from a gaseous atom in its ground state
Electron affinity
Energy change associated with the addition of an electron to a gaseous atom in its ground state
Polarizability
Ability to be distorted by an electric field
Polarizability trend
Larger species = greater polarizability
AX2E1
Bent
AX4E1
Seesaw
AX3E2
T-shaped
AX5E1
Square pyramidal
AX4E2
Square Planar
Dipole moment
Quantitative measure of bond polarity
Dipole moment equation
μ= Q x r where Q is charge r is distance and μ is expressed in (D) Debye units
London dispersion or van der waals
Weak forces of attraction as a result of nonsymmetrical electron distribution that created a temporary dipole moment
Dipole-dipole forces
Occurs between compounds with permanent dipole moment
Hydrogen bonding
Only occurs when H is bonded to N O or F
Ion-ion forces
Between compounds with positive and negative charges
Fajan’s rules
Small highly charged cations have polarizing ability Large highly charged anions are easily polarized Cations that do not have a noble-gas electron configuration are easily polarized
Metallic bond
Attraction between electropositive atoms and delocalized electrons within a metal lattice
Covalent bond
Attraction resulting from the sharing of electrons of atoms
Arrhenius acid
Produces H+ in aqueous solution
Arrhenius base
Produces OH- in aqueous solution
Brønsted-Lowry acid
Proton donor
Brønsted-Lowry base
Proton acceptor
Lewis acid
Electron pair acceptor
Lewis base
Electron pair donor
Aqua acid
Acidic proton is on a water molecule coordinated to a central metal ion
Hydroxoacid
Acidic proton is on a hydroxyl group without a neighboring oxo group
Oxoacid
Acidic proton is on a hydroxyl group with an oxo group attached to the same atom
HSAB classification
Hard acid bind to hard base and soft acid bind to soft base
Hard acid
Smaller, high charge and highly polarizing
Soft acid
Bigger, low charge, and low polarizing
Hard base
Smaller high charge least polarizable
Soft base
Big low charge highly polarizable
Paramagnetic
Molecules with at least one unpaired electron
Diamagnetic
Molecules with fully paired electrons
Ferromagnetic
Permanent magnet
Principal axis
The highest symmetry axis in a molecule
Crystalline solids
Solids with highly regular arrangements of their components
Amorphous solids
Solids with considerable disorder in their structures
Coordination number
Number of nearest nearby atoms in a lattice
Conductors
When valence band and conduction band overlap
Insulators
A large band gap between the valence and conduction band which prevents the motion of electrons
Semiconductors
The band gap is small enough that energy may be inputted to excite valence band electrons to the conduction band
Intrinsic semiconductors
Elements that exhibit semi-conductive behavior at their pure state
n-type dopants
Group 15 elements are capable of adding an electron relative to the host semiconductor
p-type dopants
Group 13 elements provide a positive hole for increasing conductance
Alloy
A mixture of metals or a mixture of a metal and another elements
Substitutional alloy
Some of the host metal atoms are replaced by other metal atoms of similar size
Interstitial alloy
Formed when some of the interstices or holes in the closest packed metal structure are occupied by small atoms
Molecular solids
Has discrete molecular units at each lattice position
Atomic solids
Have atoms occupying the lattice points
Ionic solids
Stable high-melting substance held together by strong electrostatic forces that exist between oppositely charged ions
Lattice energy
The change in energy that takes place when separated gaseous ions are packed together to form an ionic solid
Coordination complex
Transition metals (Lewis acid) accept electrons from ligands (Lewis base)
Primary valence
Oxidation state of metal
Secondary valence
Coordination number
Denticity
Number of times a ligands binds to a metal through donor atoms
Linkage isomer
Only occurs with ambidentate ligands where the same ligand may link through different atoms
Ionization isomer
Occurs
Energy in ionic solid formation
the change in energy that takes place when separated gaseous ions are packed together to form an ionic solid
Secondary valence
coordination number
Denticity
number of times a ligands binds to a metal through donor atoms
Linkage isomer
only occurs with ambidentate ligands where the same ligand may link through different atoms
Ionization isomer
occurs when a ligand and a counterion in one compound exchange places
Hydration isomer
Ionization isomer but is specific for water
Coordination isomer
arises when there are different complex ions that can form the same molecular formula, or simply two metals exchanging ligands
Polymerization isomer
denote complexes which have the same empirical formula but different molar masses
Stereoisomers
isomers differing only in their three-dimensional arrangement
Optical isomers
non-superimposable mirror images of each other and can rotate plane-polarized light
Crystal field theory
electrostatic model that involves interactions between the electrons from the ligands and the electrons in the metal d-orbitals
Ligand field splitting parameter, ∆0
The separation of the two sets of orbitals
The magnitude of the ligand field splitting parameter depends on the charge on the metal ion principal quantum number and the nature of the ligand
Effect of principal quantum number
shorter metal-ligand distance, stronger orbital-ligand interaction, ∆0 increases
Spectrochemical series of ligands
I- < Br- < SCN- < Cl- < NO3- < F- < OH- < H2O < NCS- < NH3 < en < phen < NO2- < PPh3 < CN- < CO
Color absorbed and seen relationship for red
if color absorbed is red, color seen is green
Color absorbed and seen relationship for yellow
if color absorbed is yellow, color seen is violet
Polyprotic acids
acids that yield more than one H3O+ ion
Buffer
combination of a weak acid/base and its conjugate acid/base in equal concentrations
GEROA
Gain electrons reduction oxidizing agent
LEORA
lose electrons oxidation reducing agent
Oxidation number
total number of electrons removed/added to an element
Democritus
All matter is made up of indestructive units called atoms
Example sentence: Democritus was an ancient Greek philosopher who proposed the concept of atoms.
Max Planck
Proposed the idea of quantization
John Dalton 4
Chemical reactions involve reorganization of the atoms
John Dalton 1
Each element is made up of atom
John Dalton 2
Atoms of a given compound are identical
John Dalton 3
Compounds are formed when atoms combine with each other
Frederick Soddy
Discovered that there appeared to be more than one element at each position on the periodic table
Margaret Todd
Coined the term isotope
Dmitri Mendeleev
Created the periodic table based on the periodic functions of their atomic weight
Richard Abegg
Found that noble gases have stable electron configurations
James Clerk Maxwell
Proposed the theory of electromagnetism and made connection between light and electromagnetic waves
Albert Einstein
Created the theories of relativity and hypothesized about the particle nature of light
George Stoney
Proposed that electricity was made up of discrete negative particles called electrons
Hans Geiger
Invented a device that could detect alpha particles
Sir William Crooke
Demonstrated in his experiments that cathode rays have a negative charge
Robert Millikan
Determined the charge of an electron through his oil drop experiment
Eugene Goldstein
Used cathode ray tube to study canal rays which had electrical and magnetic properties opposite of an electron
Ernest Rutherford
Performed alpha particle experiment and established that the nucleus was very dense very small and positively charged
Wilhelm Roentgen
Discovered that certain chemicals glowed when exposed to cathode rays called X-rays
Henry Moseley
Discovered that the number of protons in an element determines its atomic number
Henri Becquerel
Discovered radiation by studying the effects of X-rays on photographic film
Neils Bohr
Developed Bohr atomic model with electrons travelling in orbits around the nucleus
Sir Joseph John Thompson
Used cathode ray tubes to determine the charge to mass ratio of an electron
Louis de Broglie
Proposed that electrons have a wave-particle duality
Ernest Rutherford 2
Discovered alpha beta and gamma rays in radiation
Erwin Schrödinger
Developed the Schrödinger equation which describes how the quantum state of a system changes with time
Pierre and Marie Curie
Theorized that radioactive particles cause atoms to break down releasing radiation that take form in energy and subatomic particles
Pierre and Marie Curie 2
Discovered the radioactive elements Polonium and Radium
Antoine Lavoisier
Father of Modern Chemistry
Antoine Lavoisier 1
Named oxygen and proved that water is a compound of hydrogen and oxygen
Antoine Lavoisier 2
Conservation of mass in a chemical reaction
Antoine Lavoisier 3
Introduced a new system of nomenclature where each substance was given a single name which described its composition
Amedeo Avogadro
Formulated the Avogadro’s law and Avogadro’s number 6.022x10^23
Jons Jakob Berzelius
Isolated new elements and developed a chemical notation system using letters and numbers
John Dalton 5
Created 36 chemical symbols
Dalton’s Billiard Ball Model
First to describe atoms in a modern scientific sense
Thomson’s Plum Pudding model
Showed the existence of protons and electrons
Rutherford’s nuclear model
Showed the nucleus
Bohr’s planetary model
Showed energy levels
Schrödinger’s electron cloud model
Showed subshells and shells are actually orbitals
Chadwick
Existence of neutrons
Mass number
Number of protons and neutrons in an atom
Atomic number
Number of protons in an atom
Atomic symbol
Abbreviation used to represent atom in chemical formulas
Francis William Aston
Discovered isotopes
Johann Dobereiner
Proposed the law of Triads where the middle element in certain triads had an atomic weight that was average of the other two members
John Newlands
Law of Octaves where every eighth element shared similar properties
Lothar Meyer
Studied the relationship of the atomic volume and relative atomic mass of 28 elements
Dmitri Mendeleev 2
Formulated Periodic Law and made a periodic table of 63 known elements where their properties are periodic functions of their atomic masses
Antonius van den Broek
First suggested that the number of charges in an element’s atomic nucleus is exactly equal to the element’s place on Mendeleev’s table
Henry Moseley
Discovered atomic number and its relationship between atomic mass
Glenn Seaborg
Discovery of 10 transuranium elements
Glenn Seaborg 1
Had an element named after him while he was still alive
Strontium fireworks
Red
Calcium fireworks
Orange
Sodium Fireworks
Yellow
Barium fireworks
Green
Copper fireworks
Blue
Copper and strontium fireworks
Purple
Iron fireworks
Gold/light yellow
Aluminum fireworks
Silver and white
Magnesium fireworks
White
Lithium fireworks
Red
Cesium flame color
Blue violet
Rubidium flame color
Red to violet
Glenn Seaborg
Had an element named after him while he was still alive
Example: Seaborgium (Sg)
IUPAC
International Union of Pure and Applied Chemistry
Alkali metals
Lustrous soft and highly reactive metals ready to form +1 cations and found naturally only in salts
Alkaline earth metals
React with water to form alkaline hydroxides readily lose valence to form +2 cations
Transition metals
Less reactive than group 1 and 2 metals have higher melting points and densities
Boron group or Icosagens
Have low melting points and poor hardness and react with oxygen to form oxides
Carbon group or Crystallogens
Has four valence electrons form hydrides with hydrogen tetrahalides with halogens and variety of oxides with oxygen
Nitrogen group or Pnictogens
Have five valence electrons all are solid except the first element
Oxygen group or Chalcogens
Have six valence electrons and electronegative nonmetals react with metals to form -2 ions
Halogens
All are reactive nonmetals have seven electrons and only group that contains solid liquid and gas (I and As are solids Br is liquid and F and Cl are gases)
Noble gases
Very low chemical reactivity and colorless gases but exhibit colors when ionized
6 commonly recognized Metalloids
B, Si, Ge, As, Sb, Te
Allotrope
One of two or more distinct forms of an element
Alfred Stock
Stock nomenclature where oxidation states are indicated in parentheses by Roman numerals
Cyanide formula
CN-
Cyanate formula
OCN-
Carbonate formula
CO3^2-
Bicarbonate
HCO3 -
Oxalate
C2O4 ^2-
Acetate
CH3COO-
Borate
BO3^3-
Arsenate
AsO4^3-
Silicate
SiO4^4-
Permanganate
MnO4 -
Nitrite
NO2 -
Nitrate
NO3 -
Hydroxide
OH-
Peroxide
O2^2-
Thiocyanate
SCN-
Sulfite
SO3^2-
Bisulfite
HSO3 -
Sulfate
SO4^2-
Bisulfate
HSO4 -
Thiosulfate
S2O3^2-
Phosphite
PO3^3-
Biphosphite
HPO3^2-
Dihydrogen phosphite
H2PO3 -
Phosphate
PO4^3-
Biphosphate
HPO4^2-
Hypochlorite
ClO-
Chlorite
ClO2 -
Chlorate
ClO3 -
Perchlorate
ClO4 -
Hypobromite
BrO-
Bromite
BrO2 -
Bromate
BrO3 -
Perbromate
BrO4 -
Hypoiodite
IO-
Iodite
IO2 -
Iodate
IO3 -
Periodate
IO4 -
Chromate
CrO4^2-
Dichromate
Cr2O7^2-
Hydrates
Compounds that have specific number of water molecules attached to them
Binary acids
Contains a hydrogen and an anion
Oxyacids
Contains a hydrogen and an oxyanion
Magnesia
MgO
Lime
CaO
Alumina
Al2O3
Silica
SiO2
Caustic soda
NaOH
Caustic potash
KOH
Milk of magnesia
Mg(OH)2
Slaked Lime
Ca(OH)2
Baking soda
NAHCO3
Soda ash
Na2CO3
Washing soda
Na2CO3 • 10H2O
Pearl ash
K2CO3
Magnesite
MgCO3
Calcite
CaCO3
Dolomite
CaMg(CO3)2
Siderite
FeCO3
Glauber’s salt
Na2SO4 • 10H2O
Epsom salt
MgSO4 • 7H2O
Plaster of Paris
CaSO4 • 1/2 H2O
Gypsum
CaSO4 • 2H2O
Oil of vitriol
H2SO4
Blue vitriol
CuSO4 • 5H2O
Green vitriol
FeSO4 • 7H2O
White vitriol
ZnSO4 •7H2O
Diborane
B2H6
Silane
SiH4
Phosphine
PH3
Hydrogen sulfide
H2S
Justus Von Liebig
Identified the first
Oil of vitriol
H2SO4
Sulfuric acid
Blue vitriol
CuSO4 • 5H2O
Copper(II) sulfate pentahydrate
Green vitriol
FeSO4 • 7H2O
Iron(II) sulfate heptahydrate
White vitriol
ZnSO4 • 7H2O
Zinc sulfate heptahydrate
Diborane
B2H6
Diborane is a colorless, highly reactive gas
Silane
SiH4
Silicon tetrahydride
Phosphine
PH3
Phosphine is a colorless, flammable gas
Hydrogen sulfide
H2S
Hydrogen sulfide is a colorless gas with a characteristic odor of rotten eggs
Justus Von Liebig
Identified the first example of isomerism and that nitrogen is an essential plant nutrient
Chemist and principal founder of organic chemistry
Friedrich Wöhler
Accidentally synthesized urea and co-discoverer of Be and Si
German chemist known for his discovery of the synthesis of urea
August Kekulé
Structure of benzene’s ring shaped structure
German chemist who proposed the structure of benzene
Kathleen Lonsdale
Used X-ray crystallography to prove the benzene ring’s structure
Irish crystallographer and first woman tenured professor at University College London
Linus Pauling
Known for his work on chemical bonding and proposed the Pauling electronegativity scale
American chemist and two-time Nobel Prize winner
Michael Faraday
Faraday’s constant 96485 C/mol
English scientist who contributed to the fields of electromagnetism and electrochemistry
Edward Frankland
Pioneers of organometallic chemistry and pioneered the concept of combining power or valence
English chemist known for his work on valence theory
Jacobus Henricus van’t Hoff
First winner of the Nobel prize in Chemistry and one of the founders of physical chemistry laid foundation for stereochemistry
Dutch physical chemist and first winner of the Nobel Prize in Chemistry
Gilbert Lewis
Lewis structure
American physical chemist known for his concept of electron pairs
Erick Hückel
Developed the Hückel method of approximate molecular orbital calculations on π electron systems
German physical chemist and physicist
Victor Grignard
Discovered Grignard reagent and reaction
French chemist and Nobel Prize winner
Emil Fischer
Discovered Fischer esterification developed Fischer projection and hypothesized lock and key mechanism of enzyme action
German chemist and Nobel Prize winner
Hybridization
Combination of two or more atomic orbitals to form the same number of hybrid orbitals each having the same shape and energy
Concept in chemistry to explain the geometry of molecules
As bond length increases
Bond strength decreases
Inverse relationship in chemical bonds
Nonpolar bond
Electronegative difference is less than 0.4
Type of covalent bond with equal sharing of electrons
Ionic bond
Electronegative difference is 2.0 or more
Type of bond formed between a metal and a non-metal
Polar covalent bonds
Electronegative difference between 0.4-1.7
Type of covalent bond with unequal sharing of electrons
Inductive effect
The pull of electron density through sigma bonds caused by electronegativity difference of atoms
Effect in organic chemistry that influences the distribution of electrons
Spirocyclic
Two rings share one atom, has the prefix spiro[x.y] where x is smaller
Type of bicyclic compound
Fused bicyclic
Two rings share two atoms in one bond, bicyclo[x.y.0] where x is bigger
Type of bicyclic compound with shared atoms
Bridged bicyclic
Two rings share three or more atoms, separating the two bridgehead atoms by a bridge containing at least one atom, bicyclo[x.y.z] where x is bigger and z is number of bridgehead atoms
Type of bicyclic compound with a bridge
Functional group priority
Alkyl halide < ether < alkane < alkyne < alkene < amine < alcohol < ketone < aldehyde < nitrile < amide < ester < carboxylic acid
Order of priority for functional groups in organic chemistry
Wavelength
Distance between identical points on consecutive waves
Physical property of a wave
Amplitude
Distance between origin and crest or trough
Measure of the height of a wave
Frequency
Number of waves that pass per unit time
Measure of the rate of wave oscillation
Speed
Wavelength times frequency
Relationship between wavelength and frequency in waves
Speed of light
3x10^8 m/s
Constant speed of light in a vacuum
Blackbody radiation
Relationship between an object’s temperature and the wavelength of electromagnetic radiation it emits
Thermal radiation from a perfect absorber and emitter of electromagnetic radiation
Planck’s equation
E = hv = (hc)/lambda
Equation describing the energy of a photon
Planck’s constant
h= 6.626x10^-34 J•s/particle
Physical constant used in quantum mechanics
Indium flame color
Blue
Color of flame produced by burning indium
Lead flame color
Light blue
Color of flame produced by burning lead
Arsenic flame color
Blue
Color of flame produced by burning arsenic
Sulfur flame color
Blue
Color of flame produced by burning sulfur
Radium flame color
Crimson red
Color of flame produced by burning radium
Antimony flame color
Pale green
Color of flame produced by burning antimony
Selenium flame color
Azure blue
Color of flame produced by burning selenium
Tin flame color
Blue-white
Color of flame produced by burning tin
Tantalum flame color
Blue
Color of flame produced by burning tantalum
Zinc flame color
Blue-green
Color of flame produced by burning zinc
Tungsten flame color
Green
Color of flame produced by burning tungsten
Yttrium flame color
Carmine crimson or scarlet red
Color of flame produced by burning yttrium
Zirconium flame color
Mid/dull red
Color of flame produced by burning zirconium
Photoelectric effect
Irradiating a metal surface causes ejection of electron
Phenomenon where light causes emission of electrons from a material
Work function
Minimum energy required to remove electrons from the metal surface
Energy required to remove an electron from a material
Threshold frequency
Minimum frequency multiplied by Planck’s constant to obtain work function
Frequency of light required to overcome the work function of a material
Principal quantum number
n main energy level and distance if electrons from nucleus
Quantum number in atomic theory indicating main energy levels
Azimuthal quantum number
l energy subshells and shape of orbitals
Quantum number indicating energy subshells in an atom
Magnetic quantum number
Number of orbitals in subshells and possible orientation of orbitals in space
Quantum number indicating orbital orientations
Spin quantum number
Movement of electron around its own axis clockwise and counterclockwise
Quantum number indicating electron spin
Aufbau Principle
Building up principle orbital with lower energy is filled up first
Principle in chemistry for filling electron orbitals
Madelung’s rule
Energy increases with increasing n + 1
Rule for determining electron configurations
Hund’s rule of Maximum Multiplicity
For degenerate orbitals electrons must first occupy them singly with parallel spin before filling with pairs
Rule for filling electron orbitals
Pauli’s exclusion principle
No two electrons can have the same set of quantum numbers
Principle in quantum mechanics
Chromium electron configuration
[Ar] 4s1 3d5
Electron configuration of Chromium
Molybdenum electron configuration
[Kr] 5s1 4d5
Electron configuration of Molybdenum
Copper electron configuration
[Ar] 4s1 3d10
Electron configuration of Copper
Silver electron configuration
[Kr]
Electron configuration of Silver
Hund’s rule of Maximum Multiplicity
For degenerate orbitals electrons must first occupy them singly with parallel spin before filling with pairs
Example: In the 2p subshell, each electron will first occupy a separate orbital before pairing up
Pauli’s exclusion principle
No two electrons can have the same set of quantum numbers
Chromium electron configuration
[Ar] 4s1 3d5
Molybdenum electron configuration
[Kr] 5s1 4d5
Copper electron configuration
[Ar] 4s1 3d10
Silver electron configuration
[Kr] 5s1 4d10
Slater’s rule
Used to calculate the shielding constant
Lanthanide contraction
Additional electrons do not add to the atomic size in the 5th and 6th period
Ionization energy
Energy required to remove an electron from a gaseous atom in its ground state
Electron affinity
Energy change associated with the addition of an electron to a gaseous atom in its ground state
Polarizability
Ability to be distorted by an electric field
Polarizability trend
Larger species = greater polarizability
AX2E1
Bent
AX4E1
Seesaw
AX3E2
T-shaped
AX5E1
Square pyramidal
AX4E2
Square Planar
Dipole moment
Quantitative measure of bond polarity
Dipole moment equation
μ= Q x r where Q is charge r is distance and μ is expressed in (D) Debye units
London dispersion or van der waals
Weak forces of attraction as a result of nonsymmetrical electron distribution that created a temporary dipole moment
Dipole-dipole forces
Occurs between compounds with permanent dipole moment
Hydrogen bonding
Only occurs when H is bonded to N O or F
Ion-ion forces
Between compounds with positive and negative charges
Fajan’s rules
Small highly charged cations have polarizing ability Large highly charged anions are easily polarized Cations that do not have a noble-gas electron configuration are easily polarized
Metallic bond
Attraction between electropositive atoms and delocalized electrons within a metal lattice
Covalent bond
Attraction resulting from the sharing of electrons of atoms
Arrhenius acid
Produces H+ in aqueous solution
Arrhenius base
Produces OH- in aqueous solution
Brønsted-Lowry acid
Proton donor
Brønsted-Lowry base
Proton acceptor
Lewis acid
Electron pair acceptor
Lewis base
Electron pair donor
Aqua acid
Acidic proton is on a water molecule coordinated to a central metal ion
Hydroxoacid
Acidic proton is on a hydroxyl group without a neighboring oxo group
Oxoacid
Acidic proton is on a hydroxyl group with an oxo group attached to the same atom
HSAB classification
Hard acid bind to hard base and soft acid bind to soft base
Hard acid
Smaller, high charge and highly polarizing
Soft acid
Bigger, low charge, and low polarizing
Hard base
Smaller high charge least polarizable
Soft base
Big low charge highly polarizable
Paramagnetic
Molecules with at least one unpaired electron
Diamagnetic
Molecules with fully paired electrons
Ferromagnetic
Permanent magnet
Principal axis
The highest symmetry axis in a molecule
Crystalline solids
Solids with highly regular arrangements of their components
Amorphous solids
Solids with considerable disorder in their structures
Coordination number
Number of nearest nearby atoms in a lattice
Conductors
When valence band and conduction band overlap
Insulators
A large band gap between the valence and conduction band which prevents the motion of electrons
Semiconductors
The band gap is small enough that energy may be inputted to excite valence band electrons to the conduction band
Intrinsic semiconductors
Elements that exhibit semi-conductive behavior at their pure state
n-type dopants
Group 15 elements are capable of adding an electron relative to the host semiconductor
p-type dopants
Group 13 elements provide a positive hole for increasing conductance
Alloy
A mixture of metals or a mixture of a metal and another elements
Substitutional alloy
Some of the host metal atoms are replaced by other metal atoms of similar size
Interstitial alloy
Formed when some of the interstices or holes in the closest packed metal structure are occupied by small atoms
Molecular solids
Has discrete molecular units at each lattice position
Atomic solids
Have atoms occupying the lattice points
Ionic solids
Stable high-melting substance held together by strong electrostatic forces that exist between oppositely charged ions
Lattice energy
The change in energy that takes place when separated gaseous ions are packed together to form an ionic solid
Coordination complex
Transition metals (Lewis acid) accept electrons from ligands (Lewis base)
Primary valence
Oxidation state of metal
Secondary valence
Coordination number
Denticity
Number of times a ligands binds to a metal through donor atoms
Linkage isomer
Only occurs with ambidentate ligands where the same ligand may link through different atoms
Ionization isomer
Occurs
Energy in ionic solid formation
the change in energy that takes place when separated gaseous ions are packed together to form an ionic solid
Secondary valence
coordination number
Denticity
number of times a ligands binds to a metal through donor atoms
Linkage isomer
only occurs with ambidentate ligands where the same ligand may link through different atoms
Ionization isomer
occurs when a ligand and a counterion in one compound exchange places
Hydration isomer
Ionization isomer but is specific for water
Coordination isomer
arises when there are different complex ions that can form the same molecular formula, or simply two metals exchanging ligands
Polymerization isomer
denote complexes which have the same empirical formula but different molar masses
Stereoisomers
isomers differing only in their three-dimensional arrangement
Optical isomers
non-superimposable mirror images of each other and can rotate plane-polarized light
Crystal field theory
electrostatic model that involves interactions between the electrons from the ligands and the electrons in the metal d-orbitals
Ligand field splitting parameter, ∆0
The separation of the two sets of orbitals
The magnitude of the ligand field splitting parameter depends on the charge on the metal ion principal quantum number and the nature of the ligand
Effect of principal quantum number
shorter metal-ligand distance, stronger orbital-ligand interaction, ∆0 increases
Spectrochemical series of ligands
I- < Br- < SCN- < Cl- < NO3- < F- < OH- < H2O < NCS- < NH3 < en < phen < NO2- < PPh3 < CN- < CO
Color absorbed and seen relationship for red
if color absorbed is red, color seen is green
Color absorbed and seen relationship for yellow
if color absorbed is yellow, color seen is violet
Polyprotic acids
acids that yield more than one H3O+ ion
Buffer
combination of a weak acid/base and its conjugate acid/base in equal concentrations
GEROA
Gain electrons reduction oxidizing agent
LEORA
lose electrons oxidation reducing agent
Oxidation number
total number of electrons removed/added to an element