Chapter 6-7

Question 1

C (light constant)

Answer 1

3 x 10^8 m/s
c = λv

Question 2

λ

Answer 2

wavelength (in m)

Question 3

v

Answer 3

frequency (s^-1 or Hz)

Question 4

Energy for 1 Photon of light

Answer 4

ΔE = h ∙ ν

Question 5

Planck’s constant

Answer 5

h = 6.626 x 10-34 J ∙ s

Question 6

En

Answer 6

electron energy associated with this orbit number

Question 7

Potential energy

Answer 7

En = (-RH)/n^2

Question 8

Rydberg’s constant

Answer 8

2.178 x 10^-18 J

Question 9

n

Answer 9

orbit number or energy level

Question 10

Energy emitted

Answer 10

∆En = -Rh [ (1/n^2) - (1/n^2) ]

n final - n initial

Question 11

Electron Configuration

Answer 11

Starts at 1s2 2s2 2p6…
Noble Gases can be used as Shortcut
More negatively charged = add electrons
More positively charged = remove electrons
Electrons are always removed from the s-subshell first in order to keep electrons in the higher energy subshell.

Exceptions (take away 1 electron from s group and add to d group from expected outcome):
Cr, Mo
Cu, Ag, Au

Question 12

Quantum Numbers

Answer 12

Quantum numbers is a four-digit code that represents a particular electron in the electron cloud. Every combination is unique.
(n, ℓ, ml, ms)

Question 13

n

Answer 13

n = principal energy level (which shell) (the number in front of your subshell 3d)
1,2,3,4

Question 14

l

Answer 14

ℓ = shape of the orbital (where this electron is likely found ≈ 95%) (which subshell) (region on the P.T.)
0,1,2,3

Question 15

Ml

Answer 15

ml = orientation of the orbital (which orbital) (pair)
-l to l

Question 16

Ms

Answer 16

ms = spin of the electron (which electron/element)
+-1/2