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Here are some orbital diagram and electron configuration examples for the elements boron through sodium. Look at them carefully and try to understand how each diagram fits the rules for determining electron placement.

Element	Atomic Number	Electron configuration and orbital diagram
boron	5	1s² 2s² 2p¹
carbon	6	1s² 2s² 2p²
nitrogen	7	1s² 2s² 2p3
oxygen	8	1s² 2s² 2p4
fluorine	9	1s² 2s² 2p5
neon	10	1s² 2s² 2p6
sodium	11	1s² 2s² 2p6 3s¹