CHEM 210 Final Exam Study Guide j j j j j
1. What is ground state electron configuration of Co?[A
j j j j j j j j j
r]3d^9
[Ar]4s^1 3d^8 j j
[Ar]4s^2 3d^7 j
[Ar]4s^2 4p^6 4d^1: [Ar]4s^2 3d^7
j j j j
2. molybdenum has an anomalous electron configuration. using the short-
j j j j j j j j
hand notation for electron configurations, write the electron configuration
j j j j j j j j j
A) [kr]5s 4d^6
j j
B) [kr]5s 4d^0 5p^6
j j j
C) [kr]5s^1 4d^5
j j
D) [kr]5s^2 4d^4: C) [kr]5s^1 4d^5
j j j j j
1j/j12
,3. the symbol [Kr] represents
j j j
a) 4s^2 4p^6
j j
b) 1s^2 2s^2 2p^6 3s^6 4s^2 4p^6
j j j j j j
c) 1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6
j j j j j j j
D)1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6 4d^10: c) 1s^2 2s^2 2p^6 3s^6 4s^23d^1
j j j j j j j j j j j j j j
0 4p^6
j
4. What is the wavelength of UV light in the balmer series when m=2 and n=7?a) 0.0
j j j j j j j j j j j j j j j j
0252 nm j
b) 397 nm j
c)337 nm j
d)0.00297 nm: b) 397 nm j j j j
5. How many electrons can a single orbital hold?
j j j j j j j
A) 2n
B) 2
C) 2l+1
D)8: B) 2j j
2j/j12
,6. What are the possible values of I and m1 for an electron in a 5d orbitial?
j j j j j j j j j j j j j j j
A) I=0 and mI=0
j j j
B) I=3 and MI=-2,-
j j j
1,0,+1, or +2c) I=1 and MI=-
j j j j j j
1,0,+1
D) I=2 and MI=-2,-1,0,+1, +2: D) I=2 and MI=-2,-1,0,+1, +2
j j j j j j j j j
7. WhatisthethedeBrogliewavelengthofanelectron(m=9.11e-
j j j j j j j j j j
31kg)movingat a velocity of 3.0e7m/s?
j j j j j j j
a) 3.9e-12
j
b)2.4e-11
c)3.3e-8
d)1.1e-4: b)2.4e-11 j
3j/j12
, 8. What is the frequency of a helium-
j j j j j j
neon laser light with a wave of 632.8 nm?a) 4.47e14 s-1
j j j j j j j j j j j
b)4.47e5 s-1 j
c)2.11e-15 s-1 j
d)1.58e-15 s-1: a) 4.47e14 s-1 j j j j
9. What is the correct nuclear symbol for the unknown product "X" in thenucl
j j j j j j j j j j j j j
ear equation shown below?
j j j
A)234 j
TH
90
B) 226 j
Ra
j 88
C) 234 j j
U
90
D) 242 j
Pu j
4j/j12
1. What is ground state electron configuration of Co?[A
j j j j j j j j j
r]3d^9
[Ar]4s^1 3d^8 j j
[Ar]4s^2 3d^7 j
[Ar]4s^2 4p^6 4d^1: [Ar]4s^2 3d^7
j j j j
2. molybdenum has an anomalous electron configuration. using the short-
j j j j j j j j
hand notation for electron configurations, write the electron configuration
j j j j j j j j j
A) [kr]5s 4d^6
j j
B) [kr]5s 4d^0 5p^6
j j j
C) [kr]5s^1 4d^5
j j
D) [kr]5s^2 4d^4: C) [kr]5s^1 4d^5
j j j j j
1j/j12
,3. the symbol [Kr] represents
j j j
a) 4s^2 4p^6
j j
b) 1s^2 2s^2 2p^6 3s^6 4s^2 4p^6
j j j j j j
c) 1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6
j j j j j j j
D)1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6 4d^10: c) 1s^2 2s^2 2p^6 3s^6 4s^23d^1
j j j j j j j j j j j j j j
0 4p^6
j
4. What is the wavelength of UV light in the balmer series when m=2 and n=7?a) 0.0
j j j j j j j j j j j j j j j j
0252 nm j
b) 397 nm j
c)337 nm j
d)0.00297 nm: b) 397 nm j j j j
5. How many electrons can a single orbital hold?
j j j j j j j
A) 2n
B) 2
C) 2l+1
D)8: B) 2j j
2j/j12
,6. What are the possible values of I and m1 for an electron in a 5d orbitial?
j j j j j j j j j j j j j j j
A) I=0 and mI=0
j j j
B) I=3 and MI=-2,-
j j j
1,0,+1, or +2c) I=1 and MI=-
j j j j j j
1,0,+1
D) I=2 and MI=-2,-1,0,+1, +2: D) I=2 and MI=-2,-1,0,+1, +2
j j j j j j j j j
7. WhatisthethedeBrogliewavelengthofanelectron(m=9.11e-
j j j j j j j j j j
31kg)movingat a velocity of 3.0e7m/s?
j j j j j j j
a) 3.9e-12
j
b)2.4e-11
c)3.3e-8
d)1.1e-4: b)2.4e-11 j
3j/j12
, 8. What is the frequency of a helium-
j j j j j j
neon laser light with a wave of 632.8 nm?a) 4.47e14 s-1
j j j j j j j j j j j
b)4.47e5 s-1 j
c)2.11e-15 s-1 j
d)1.58e-15 s-1: a) 4.47e14 s-1 j j j j
9. What is the correct nuclear symbol for the unknown product "X" in thenucl
j j j j j j j j j j j j j
ear equation shown below?
j j j
A)234 j
TH
90
B) 226 j
Ra
j 88
C) 234 j j
U
90
D) 242 j
Pu j
4j/j12
