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Sunday, May 24, 2020

B-F bond length in BF3 is shorter than B-F bond length in (BF4)- why?

B-F bond length increases when BF3(130 pm) reacts with F- to form (BF4)- [143 pm]. Its due to absence of Back-bonding in (BF4)- hence B-F bond has completely single bond character
Kumar Sir at
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