Use the following orbital-filling diagram to show the electron configuration for As:

Identify the element with the given electron orbital diagram. 

Write the electron configuration and electron orbital diagram for the following element:

Sulfur   (Z = 16)

Write the ground state electron configuration for the following element:

Magnesium   (Z = 12)  

Which of the following atoms has the most unpaired electrons?

Which electron configuration represents a violation of Hund's Rule?