1. How many sets of four quantum numbers might be associated with a 3d subshell? List them all.

2. How many sets of four quantum numbers might be associated with a 4p subshell? List them all.

3. What does the orbital diagram (box diagram) for Si look like? Use the inert gas abbreviation. Indicate for each box in the diagram what the four quantum numbers are for the electrons.

4. What are the rules that restrict the values of n, l, and ml? Show how this limits the number of electrons in the a subshell.

5. What does the orbital diagram (box diagram) for Ni⁺² look like? Use the inert gas abbreviation. Indicate for each box in the diagram what the four quantum numbers are for the electrons.

6. When Cu is bombarded by an electron gun it emits Ka x-rays of 0.154 nm. What is the electron transition responsible for this x-ray?