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When N₂ is converted to N₂⁺, what happens to the bond dissociation energy of the N–N bond, and when O₂ is converted to O₂⁺, what happens to the bond dissociation energy of the O–O bond?
- increases in the first case and decreases in the second
- decreases in the first case and increases in the second
- decreases in both cases
- increases in both cases
Correct answer: decreases in the first case and increases in the second
Solution
When N₂ is converted to N₂⁺, the bond dissociation energy of the N–N bond decreases due to the loss of an electron, which reduces the bond order, whereas when O₂ is converted to O₂⁺, the bond dissociation energy of the O–O bond increases because the loss of an electron increases the bond order from 2 to 2.5.
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