Write 1-20 elements 2 times with atomic number, atomic mass, symbol number of — electrons, protons and neutrons.
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Order - atomic no., element, symbol, atomic mass, e, p, n
1 Hydrogen H 1 1 1 0
2 Helium He 4 2 2 2
3 Lithium Li 6 3 3 3
4 Beryllium Be 9 4 4 5
5 Boron B 10 5 5 5
6 Carbon C 12 6 6 6
7 Nitrogen N 14 7 7 7
8 Oxygen 16 8 8 8
9 Fluorine 19 9 9 10
10 Neon 20 10 10 10
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