MCQ
Which of the following process involve change in bond angle with a change in hybridization :-
- ✓$BF_3 + F^-\to BF_4^-$
- B$BF_3 + BCl_3 \to BF_2Cl + BFCl_2$
- C$BF_3 + NH_3 \to F_3B . NH_3$
- D$NH_3 + HCl \to NH_4^+ Cl^-$
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$PC{l_5}\xrightarrow{\Delta }PC{l_3} + C{l_2}$

$F^-+ H_2O \rightleftharpoons HF + OH^-; K_b$
which relation is correct
