Question

why there are more unpaired electrons in O2 as compared to [02]-2 ?????

Answer 1

Answer:

here your answer is.....

Explanation:

As we know valency of oxygen is 2 .

according to the electronic configuration of the element ( he) 2s²2p^4 there are two unpaired electrons in 2py and 2pz orbitals.

as this oxygen atom gains two electrons and become (o2)-².so, 2py and 2pz orbitals are paired and exist as noble gases.