Periodic table of elements

H

hydrogen…number 1 element…1 element in each shell. atomic number of 1
He

 heluim: # 2 element in the periodic table, 2 electrons in each shell. Atomic number of 2

Li

Lithuim, 3rd element…has has 2 electron in the 1st shell, and 1 in the second shell

Be

Beryllium

x

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