6+7 Flashcards
C=
Wavelength * frequency
H * frequency =
Energy
E =
C* H / wavelength
What is h
6.626x10^-34
What is c
2.998x10^8
10 Å =
1 nm
I m =
10^10 Å
/\ E =
-RvH(1/nf^2-1/ni^2)
n=
Principle QN
l=
Angular momentum QN
ml =
Magnetic QN
ms=
Magnetic spin
How do you get the max # of e-
2(n)^2
What is l
Spdf
How do you figure out ml
-l to +l
What does the s orbital look like
A circle
What does the P orbital look like
An 8
What does the d orbital look like
8’s crossing X
Ms= ^ = v=
^ = +1/2 V = -1/2
Hund’s rule
For degenerate orbitals the lowest energy is attained when the # of e- with the same spin is maximized
Irregularities
Occur when e- want to half fill s + d orbitals
4s2 3d4 will turn into what if irregular
4s1 3d5
Electron configuration
1s2 2s2 2p6 …
Orbital diagram
^v ^v ^v^v^v
Dmitri Mendeleev
Came to the conclusion that elements should be grouped
Henry Moseley
Came up with the concept of atomic #
What do you add as you grow across a period
E-
What do you add as you go down a group
Energy levels
List the order of increasing size for cations anions and parents
Cations parents anions
Isoelectronics
Have the same # of e-
Same electron configuration
Ionizations energy
Minimum amount of energy it takes to remove an e-
What happens to ionization energy as it goes across a period
Increase
What happens to ionizations energy as it does down a group
Decrease
Electron affinity
When you add an e-
Exothermic
Electronegativity
Ability of an e- to attract e-s to itself
What happens to electronegative as it goes down a group
Decreases
What happens to Electronegativity as you go across a period
Increase
What happens to atomic radius as you go down a group
Increase
What happens to atomic radius as you go across a period
Decrease
What happens to s and P groups when they are with transition metals
Colored because metal ions can have a +1 oxidation #
What color flame does Li have
Red pink
What color flame does Na have
Orange
What color flame does K have
Purple
How do you get absorbable into %
Y = absorbance X = molarity X*L of solution = moles Moles / mass from periodic table Mass / total mass * 100
What color is close to 400
Purple
What color is close to 700
Red
Rh =
2.18x10^-18
Avagadros #
6.022x10^23
Units for frequency
1/s
Units for wavelength
m
Units for E
J/ photon
Home many visible lines are there on the light spectrum for H
4
