Save this PowerPoint file on your computer and show it to your science facilitator. Count and name the electrons on the table from left to right, starting at the top just like reading a page in a book. Because of energy overlaps, the first d sublevel is 3rd, not 4th electron energy level. Because of energy overlaps, the first f sublevel is 4th, not 6th electron energy level. The total of all exponents should equal the atomic number of the atom.
Carbon is the second square in the p sublevel of the second energy level.
Aluminum is the first square in the p sublevel of the third energy level. Nickel is the eighth square in the d sublevel of the third energy level. Bromine is the fifth square in the p sublevel of the fourth energy level. The Nobel Gases don't form compounds because their outer electron energy level has eight electrons. Atoms form compounds to fill their outer energy level with eight electrons.