Quantum Numbers Worksheet Key Page 2
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Chapter 7 Worksheet Keys
ORBITAL DIAGRAMS AND ELECTRONIC CONFIGURATIONS KEY
1. Write a complete electronic configuration and orbital diagram for zirconium, Zr.
2
2
6
2
6
2
10
6
2
2
1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
2. Write abbreviated electronic configurations for the following.
1
2
a. yttrium, Y
[Kr] 4d
5s
14
10
1
b. gold, Au
[Xe] 4f
5d
6s
2-
c. sulfur ion, S
[Ar]
2+
5
d. manganese ion, Mn
[Ar] 3d
3. Predict whether each of the following is paramagnetic or diamagnetic. For those that are paramagnetic,
indicate the number of unpaired electrons that they contain.
-
Paramagnetic or Diamagnetic
Number of unpaired e
a. mercury, Hg
Diamagnetic
-------------
3+
b. scandium ion, Sc
Diamagnetic
-------------
c. chromium, Cr
Paramagnetic
6
d. arsenic, As
Paramagnetic
3
CHEMISTRY 151 - ORBITAL DIAGRAMS AND ELECTRON CONFIGURATIONS KEY
1. Write a complete orbital diagram and electronic configuration for germanium, Ge.
2
2
6
2
6
2
10
2
1s
2s
2p
3s
3p
4s
3d
4p
2 & 3. Write abbreviated electronic configurations for the following. Predict whether each atom or ion is
paramagnetic or diamagnetic.
10
2
a. zinc, Zn
[Ar] 3d
4s
diamagnetic
3+
14
10
b. thallium ion, Tl
[Xe] 4f
5d
diamagnetic
5
1
c. molybdenum, Mo
[Kr] 4d
5s
paramagnetic
14
2
2
d. hafnium, Hf
[Xe] 4f
5d
6s
paramagnetic
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