Exam Sample 3-1
Dr. V. Williamson
1. The ground state electron configuration for Zn is
1
11
2
A. [Ar]4s 3d
2 10
D. [Kr]4s 3d
10
1
B. [Ar]3s 3d
2 10
E. [Ar]4s 3d
10
1
C. [Ar]4s 3d 4p
2. Which one of the following is the electron configuration for the S
2
2
2
A. [Ar]3s 3p
22
D. [Ne]3s 3p
6
2-
ion?
2
B. [Ar]3s 3p
2
E. [Ne]3s 3p6
C. [Ne]3s
3. In the wave-mechanical model, which quantum number describes the orientation of an orbital
in space?
A. m1 and ms
B. n
C. ms
D. l
E . m1
4. Which one of the following elements is represented by the orbital shown diagram below?
1s
A. Mg
2s
B. Al
2p
3s
C. Si
3p
D. Ge
E. None, this is not a proper
orbital diagram
5. Which sketch represents an orbital that cannot be found in the 2nd main energy shell?
A.
B.
C.
D.
E. neither A or B
6. Using the wave mechanical model, the maximum number of electrons that can exist at the
n=3 level of an atom is:
A. 12
B. 4
C. 18
D. 2
E. 8
3-
7. How many unpaired electrons are there in the electron configuration of a N
A. 3
B. 5
C. 2
Vickie M. Williamson 2007, All Rights Reserved
D. 0
E. 1
ion?