Chemical BondinghardMCQ SINGLE

In which one of the following molecules strongest back donation of an electron pair from halide to bChemical Bonding Chemistry Question

Question

In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected? 3 3 3 3 3 3 3 3 3 3 3 3. (A) BCl (B) BF (C) BBr (D) BI

Answer: B) BF

💡 Solution & Explanation

Compound Type of back bonding BF 2pπ-2pπ BCl 2pπ-3pπ BBr 2pπ-4pπ BI 2pπ-5pπ As the size of p-orbital increases, the strength of bond decreases. Therefore, back bonding strength is as follows - BF > BCl > BBr > BI

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