Exams › JEE Advanced › Chemistry

Consider the species FO⁺ and FO⁻. Which of the following statements is/are correct regarding the F-O bond in these species?

1. The F-O bond in FO⁺ is a single bond
2. The F-O bond length in FO⁻ is greater than in FO⁺
3. The F-O bond in FO⁻ is a double bond
4. It requires more energy to break the F-O bond in FO⁺ than in FO⁻

Correct answer: It requires more energy to break the F-O bond in FO⁺ than in FO⁻

Solution

FO has 13 electrons. FO⁺ has 12 electrons and FO⁻ has 14 electrons. Filling MOs shows FO⁺ has a higher bond order than FO⁻, meaning FO⁺ has a stronger, shorter bond requiring more energy to break.

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