1.

The outer most electronic configuration of oxygen is – A. 2s22p4 B. 2s22p6 C. 1s22s2 D. 2s22p5

Answer»

Correct Answer is: A. 2s22p4 

The electrons of an atom are arranged in a particular arrangement in different electronic orbital’s.

And every atom has a particular arrangement of electron in these electronic orbital’s which is also known as the electronic configuration.

To write down the electronic configuration of an atom, we have to know the total number of electrons of that atom.

Total number of electrons in normal oxygen atom is = 8.

So its electronic configuration will be,

1s2 2s2 2p4 



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