30 elements with the weight
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Hydrogen 1
Helium-2
Lithium-3
Beryllium 4
Boron - 5
carbon -6
Nitrogen 7
Oxygen 8
Fluorine 9
Neon 10
Sodium 11
Magnesium 12
Aluminium 13
Silicon 14
Phosphorus 15
Sulphur-16
Chlorine 17
Argon 18
Potassium 19
Calcium 20
Helium-2
Lithium-3
Beryllium 4
Boron - 5
carbon -6
Nitrogen 7
Oxygen 8
Fluorine 9
Neon 10
Sodium 11
Magnesium 12
Aluminium 13
Silicon 14
Phosphorus 15
Sulphur-16
Chlorine 17
Argon 18
Potassium 19
Calcium 20
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