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JEE Main levelOne or more correct optionsDifficulty 2 of 3ph070

Which of the following polyhalide ions have the shape stated?

A $ICl X_{2} X^{-}$ : linear
B $BrF X_{4} X^{-}$ : tetrahedral
C $ICl X_{4} X^{-}$ : square planar
D $I X_{3} X^{-}$ : linear

Answer: A, C, D

ICl X_{2} X^{-}

and

I X_{3} X^{-}

have 2 bond pairs and 3 lone pairs, hence linear.

ICl X_{4} X^{-}

has 4 bond pairs and 2 lone pairs on

s p^{3} d^{2}

I, hence square planar.

BrF X_{4} X^{-}

is also 4 bond pairs + 2 lone pairs, so it is square planar, not tetrahedral.

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