Question
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.

Answer

Element At.Numbers 

Electronic Configuration 
K    L    M     N 

1. Oxygen     8    2    6     
2. Fluorine  9 2    7
3. Sodium 11 2    8    1
4. Silicon 14  2    8    4
5.Argon 18 2    8    8

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