Q.
In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?
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AIEEEAIEEE 2007Chemical Bonding and Molecular Structure
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Solution:
In C2−C2+ electron is removed from bonding molecular orbital so bond order decreases. In NO→NO+ , electron is removed from anti bonding molecular orbital so bond order increases and nature changes from paramagnetic to diamagnetic.
Hence, (2) is correct.