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How does electron deficient compound `BF_(3)` achieve electron saturation, i.e. fully occupied outer electronic shells? |
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Answer» `BF_(3)` achieves electronic configuration by the following ways: a.`ppi-ppi` back bonding, i.e. by donation of electron pair from filled `2p`-orbital of `F` to vacant `2p`-orbital of `B`. b. Formation of complexes, i.e. by accepting a pair of electron from donor ion/molecule in vacant `2p`-orbital of `B`, e.g. `F_(3)Blarr:NH_(3)`. Boron compounds thus behaves as a Lewis acids. |
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