JEE MAIN - Chemistry (2022 - 28th July Morning Shift - No. 19)
The number of interhalogens from the following having square pyramidal structure is :
$$\mathrm{ClF}_{3}, \mathrm{IF}_{7}, \mathrm{BrF}_{5}, \mathrm{BrF}_{3}, \mathrm{I}_{2} \mathrm{Cl}_{6}, \mathrm{IF}_{5}, \mathrm{ClF}, \mathrm{ClF}_{5}$$
Answer
3
Explanation
$\mathrm{CIF}_{3} \rightarrow 3 \sigma$ bond $+2$ lone pair
$\mathrm{IF}_{7} \rightarrow 7 \sigma$ bond $+0$ lone pair
$\mathrm{BrF}_{5} \rightarrow 5 \sigma$ bond $+1$ lone pair $\rightarrow$ Square pyramidal
$\mathrm{BrF}_{3} \rightarrow 3 \sigma$ bond $+2$ lone pair
$\mathrm{I}_{2} \mathrm{Cl}_{6} \rightarrow 4 \sigma$ bond $+2$ lone pair
$\mathrm{IF}_{5} \rightarrow 5 \sigma$ bond $+1$ lone pair $\rightarrow$ Square pyramidal
$\mathrm{CIF} \rightarrow 1 \sigma$ bond $+3$ lone pair
$\mathrm{CIF}_{5} \rightarrow 5 \sigma$ bond $+1$ lone pair $\rightarrow$ Square pyramidal
$\mathrm{IF}_{7} \rightarrow 7 \sigma$ bond $+0$ lone pair
$\mathrm{BrF}_{5} \rightarrow 5 \sigma$ bond $+1$ lone pair $\rightarrow$ Square pyramidal
$\mathrm{BrF}_{3} \rightarrow 3 \sigma$ bond $+2$ lone pair
$\mathrm{I}_{2} \mathrm{Cl}_{6} \rightarrow 4 \sigma$ bond $+2$ lone pair
$\mathrm{IF}_{5} \rightarrow 5 \sigma$ bond $+1$ lone pair $\rightarrow$ Square pyramidal
$\mathrm{CIF} \rightarrow 1 \sigma$ bond $+3$ lone pair
$\mathrm{CIF}_{5} \rightarrow 5 \sigma$ bond $+1$ lone pair $\rightarrow$ Square pyramidal
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