1. What is the formulas of the following compounds?

a) Calcium chloride

b) Aluminum sulfide

c) Sodium oxide

2. Write out the box diagram electron configuration of an Fe atom in its ground state. How many unpaired electrons are there in the ground state of the Fe atom?

3. If the energy of a photon is 6.24 x 10-20J, its frequency is _____/sec.

a) 4.24 x 10-6 b) 9.43 x 1013 c) 6.24 x 1013

d) 3.00 x 108 e) 9.11 x 10-28

4. Which of the following is an incorrect designation for an atomic subshell?

a) 14s b) 3p c) 2f d) 5d e) 2p

5. How many different atomic orbitals are there that can have the designation n = 4, l=2? a) 3 b) 10 c) 16 d) 7 e) 2

6. Which is the maximum number of electrons in a 4f subshell? a) 7 b) 14 c) 10 d) 6 e) 2

7 Which of the following is not a permitted set of quantum numbers?

a) l= 3, ml= -3

b) l= 2, ml=O

c) l= 1, ml= -2

d) l= 2, ml=2

e) l= 3, ml= -1