Periodic Table of Elements
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Period 2

2 elements in this period. All elements in the same period occupy the same number of electron shells.

8 elements

3 Li Lithium 7 4 Be Beryllium 9.012 5 B Boron 10.81 6 C Carbon 12.011 7 N Nitrogen 14.007 8 O Oxygen 15.999 9 F Fluorine 18.998 10 Ne Neon 20.18