Chem Exam 3 Flashcards
Ionization Energy, Electronegativity, Acidity, Lattice Energy
Increases up and right
Radius, Metallic Character, Basic Solution Strength
Increases down and left
Acidity increases with _____ oxides
more
If the ions have different charges, the ________ the charge, the larger the lattice energy
Greater
If the ions have the same charge, the ____ the radius, the larger the lattice energy
smaller
Electronegativity doesn’t apply to
Noble gasses
Electronegativity of 0 results in
non polar covalent bonds
Electronegativity around 2 results in
Polar Covalent bonds
Electronegativity around 3 results in
Ionic Bond
Atoms that have the same number of electrons are said to be
Isoelectronic
What would experience a greater effective nuclear charge:
2p of Ne atom
3s of Na atom
2p electron of a Ne atom
Because as you move up and to the right of the periodic table, the effective nuclear charge increases
Which part of the periodic table has elements with the largest atoms
Bottom left
Cations are larger than their corresponding neutral atoms
False
F- is smaller than F
False
As Z stays constant and the number of electron increases, the electron-electron repulsions increase, and the cation becomes ______ than the neutral atom
Smaller
The 4s valence electrons are on average __________ from the nucleus than the 3d electrons, so Fe is ____________ than Fe^2+`
Farther, larger
Atomic radius increases when electrons are added to form an
Anion
The inward pull on the electrons from the nucleus
Effective Nuclear Charge
The greater the effective nuclear charge, the __________ the molecule and the harder it is to remove an electron
Smaller
First ionization energy of Lead
Pb(g)—>Pb^+(g)+e^-
As atomic radius increases, the ionization energy ________
Decreases
Nonmetal oxides form _____ solutions in water
Acidic
Bonds between two or more nonmetals are
Molecular
What halogen is a liquid at room temperature
Bromine
How many valance electrons does Nitrogen have
5
A triple covalent bond results in a _____ distance between atoms than a single bond
shorter
When two bonded atoms attract electrons with equal strength the result is a ____ bond
Non polar covalent
Occurs between an anion and cation
Ionic Bond
Isoelectronic Series
Group of atoms/ions that all have the same number of electrons
EX: O2-, F-, Ne, Na+
Second Ionization Energy of Phosphorus
P+ (g) → P2+ (g) + e-
Elements in the same column contain the same number of
Valance electrons (e-)
Zeff =
The total number of the #’s in the electron config
Cations
Smaller than the parent atoms
Anions
Larger than the parent atoms
Electron Affinity
Most negative electron affinity is the same as saying which has the largest electron affinity
Element X reacts with chlorine to form a compound with the formula XCl2. The
oxide of element X is basic. Element X is ________.
Ca
Na reacts with element X to form an ionic compound with the formula Na3X. Ca
will react with X to form ________.
Ca3X2
Element M reacts with chlorine to form a compound with the formula MCl2.
Element M is more reactive than magnesium and has a smaller radius than barium. This
element is ________.
Sr
What has a very polar bond
HF
Halogens have _____ valance electrons
7
Alkali Metals have ____ valance electrons
1
Earth metals have _____ valance electrons
2
A nonpolar bond will form between two ____ atoms of ______
identical, equal
Resonance Structures
multiple Lewis structures that describe a single molecule
Energy of Products - Energy of Reactants
∆H
