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  4. The number of antibonding electron pairs in O22- molecular ion on the basis of molecular orbital theory is (at. no. of O is 18)

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Q. The number of antibonding electron pairs in $O_2^{2-}$ molecular ion on the basis of molecular orbital theory is (at. no. of $O$ is $18$)

AIPMTAIPMT 1998Chemical Bonding and Molecular Structure

Solution:

$O_{2}^{2}$ consists of four antibonding electron pair $[1 s$ and $2 s$ have two antibonding, electron pair and $2 p_{x}, 2 p_{y}$ have two antibonding electron pair].