The Configuration of Electrons

1
The Configuration of Electrons
2
Recall

• How many energy levels are there?
• How many sublevels are there?
• How many sublevels are in the third energy level?
• How many electrons fit in an orbital?

3
Periodic Table Landscape

• How many periods?
• How many electrons can one fit in the first
  energy level?
• How many in the second?
• How about the third?
• How many blocks have we crossed so far?

4
For example...

• Li
• F
• Na
• Ar
• Ca

5
Tryout Time!

• Nitrogen
• Silicon
• Chlorine

6
And alls well and good until

• Scandium!!!
• That darned 3d orbital messes it all up.

7
Considering this added wrinkle, try these

• Sc
• Ga
• Sr
• Nb