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  4. Which of the following orders is correct for the bond dissociation energy of O2, O2-, O2- and O22-?

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Q. Which of the following orders is correct for the bond dissociation energy of $O_2, O_2^-, O_2^-$ and $O_2^{2-}$?

Chemical Bonding and Molecular Structure

Solution:

The bond order are as follows.
$O_2 = 2 ; O_2^+ = 2.5 ; O_2^- = 1.5; O_2^{2-} = 1$