First 30 elements with atomic number and mass number
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1 to 30 elements with atomic number and round off atomic mass
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Element Atomic number Atomic mass
- Hydrogen 1 1
- Helium 2 4
- Lithium 3 6.94
- Beryllium 4 9.01
- Boron 5 10.81
- Carbon 6 12.01
- Nitrogen 7 14.01
- Oxygen 8 15.99
- Fluorine 9 19
- Neon 10 20.18
- Sodium 11 22.99
- Magnesium 12 25.31
- Aluminium 13 26.98
- Silicon 14 28.09
- Phosphorus 15 30.97
- Sulphur 16 32.07
- Chlorine 17 35.45
- Argon 18 39.95
- Potassium 19 39.10
- Calcium 20 40.08
- Scandium 21 44.96
- Titanium 22 47.87
- Vanadium 23 50.94
- Chromium 24 52
- Manganese 25 54.94
- Iron 26 55.85
- Cobalt 27 58.93
- Nickel 28 58.69
- Copper 29 63.55
- Zinc 30 65.41
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