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InterviewSolution
| 1. |
Suggest reasons why the B-F bond lengths in BF3 and BF4- differ |
| Answer» Due to back bonding<br>BF3 ->. Trigonal planar( b.a. -120°)BF4– -> tetrahedral (b.a.-109.5°)Due to reduce in bond angle , bond pair Repulsion increase so, bond length is less in BF4–. | |