Describe the shapes of BF3 and BF4^...

Describe the shapes of `BF_3` and `BF_4^_`

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In `BF_3`, B atom is `sp^2` hybridised and so `BF_3` is trigonal planar.
In `BF_4^-`,B atom is `sp^3` hybridised and `BF_4^-` attains, tetrahedral geometry.

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Which of the following reactions does not take place- BF_3 + F^(-) to BF_4^(-) …(I) BF_3 + 3F^(-) ot BF_6^(3-) … (II) AIF_3 + 3F^(-) to AIF_6^(3-) … (III)

Only (I)

Only(II)

Only(III)

Only (I) and (Ill)

Higher B-F (in BF_3 ) bond dissociation energy as compared to that of C-F (in CF_4 ) is due to-

stronger `sigma` -bond between B and F in `BF_3` as compared to that between C and F in `CF_4`

significant `p pi-p pi` interaction between B and F in `BF_3` whereas there is no possibility of such interaction between C and F in `CF_4`

lower degree of `p pi-p pi` interaction between B and F in `BF_3` than that between C and F in `CF_4`

smaller size of B -atom as compared to that of C -atom

Describe the shapes of `BF_3` and `BF_4^_`

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Which of the following reactions does not take place- BF_3 + F^(-) to BF_4^(-) …(I) BF_3 + 3F^(-) ot BF_6^(3-) … (II) AIF_3 + 3F^(-) to AIF_6^(3-) … (III)

Higher B-F (in BF_3 ) bond dissociation energy as compared to that of C-F (in CF_4 ) is due to-

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