1) Principal Energy Level---School Building
How far away from the nucleus an electron can be found (n)
2)Sublevel---Floor Number
(s, p, d, f)
1st principal energy level has one Sublevel, 1s
The 2nd principal energy level has 2 sublevels, 2s and 2p
The 3rd energy level has 3 sublevels, 3s, 3p, 3d
4th and all subsequent principal levels n=4s, 4p, 4d, 4f
http://w
ww.edu.pe.ca/kish/grassroots/chem/electron.htm
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