2,8,1 - Sodium, 2,1 - Lithium, 2,8,8,2 - Calcium, 2,8,7 - Chlorine, 2,8,8,1 - Potasium, 2,7 - Fluorine, 2,8,2 - Magnesium, 2,8,6 - Oxygen, 2,4 - Carbon, 2,5 - Nitrogen, 2,3 - Boron, 2 - Helium, 1 - Hydrogen, 2,8,3 - Aluminium, 2,8 - Argon,

Electronic configuration

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