Exams › JEE Main › Chemistry
In which of the following ionisation processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic?
- N2 → N2+
- C2 → C2+
- O2 → O2+
- NO → NO+
Correct answer: O2 → O2+
Solution
When O2 gains an electron, it becomes O2-, which is paramagnetic. However, when O2 loses an electron, it becomes O2+, which is diamagnetic. This is because the loss of an electron increases the bond energy and changes the magnetic behaviour.
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