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JEE Main2007ChemistryChemical Bonding and Molecular StructureActual

In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?

Options

  1. AC ₂ C ₂⁺
  2. BNO NO ⁺
  3. CO ₂ O ₂⁺
  4. DN ₂ N ₂⁺

Correct answer

B. NO NO ⁺

Step-by-step solution

In C ₂- C ₂ ⁺ 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, (B) is correct.

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