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Chemistry - Electron Arrangement Table

Electron arrangement
Element Atomic number Mass number No. Of Protons No. Of Neutrons No. Of electrons Electron Arrangement
Hydrogen 1 1 1 0 1 1
Helium 2 4 2 2 2 2
Lithium 3 7 3 4 3 2,1
Beryllium 4 9 4 5 4 2,2
Boron 5 11 5 6 5 2,3
Carbon 6 12 6 6 6 2,4
Nitrogen 7 14 7 7 7 2,5
Oxygen 8 16 8 8 8 2,6
Fluorine 9 19 9 10 9 2,7
Neon 10 20 10 10 10 2,8
Sodium 11 23 11 12 11 2,8,1
Magnesium 12 24 12 12 12 2,8,2
Aluminium 13 27 13 14 13 2,8,3
Silicon 14 28 14 14 14 2,8,4
Phosphorus 15 31 15 16 15 2,8,5
Sulphur 16 32 16 16 16 2,8,6
Chlorine 17 35 17 18 17 2,8,7
Argon 18 40 18 22 18 2,8,8
Potassium 19 39 19 20 19 2,8,8,1
Calcium 20 40 20 20 20 2,8,8,2

 

 

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