The ionization energy of CO is greater than that of NO.
Explain this difference based on the elctron configuration of these two
molecules
Answers (1)
The HOMO of NO is an anti-bonding molecular orbital, whereas the HOMO of CO is a bonding molecular orbital. The unpaired electron in the antibonding HOMO of NO is higher in energy than those in the bonding HOMO of CO. Therefore the NO molecule is easier to ionize than CO.
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