Reaction of Boron trifluoride with HF accompanies a/an

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Change in hybridization of boron from $s p^{2} t o s p^{3}$ and elongation of Boron – Fluorine bond.

Change in hybridization of boron from sp2 to sp3 and shortening of Boron – Fluorine bond

No change in hybridization of boron and elongation of Boron – Fluorine bond

No change in hybridization of boron and shortening of Boron – Fluorine bond

answer is A.

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Detailed Solution

$\begin{array}{l} B F_{3} + H F \overset{}{\to} H [B F_{4}] \\ s p^{2} s p^{3} \end{array}$

The product has a tetrahedral geometry.

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