Chemistry · p-Block Elements (Group 15-18)

JEE Main 2026 — 8 April, Evening Shift — Question 45

Bromine trifluoride autoionizes to form $BrF_2^+$ and $BrF_4^-$ . The shapes of the cation and anion are respectively

------and --------

Answer: A

$\ce{BrF2^+} \Rightarrow sp^3$

$[\text{Bond pair} = 2,\ \text{lone pair} = 2]$

$\Rightarrow \text{bent}$

$\ce{BrF4^-} \Rightarrow sp^3 d^2$

$[\text{Bond pair} = 4,\ \text{lone pair} = 2]$

$\Rightarrow \text{square planar}$

Answer key and solution verified before publishing.

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