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JEE Advanced levelSingle correct optionDifficulty 3 of 3ph074

In which set does every species have exactly two lone pairs on the central atom?

A $ClF X_{3}$ , $IF X_{7}$ , $ICl X_{4} X^{-}$
B $BrF X_{5}$ , $ICl X_{4} X^{-}$ , $BrF X_{4} X^{-}$
C $ClF X_{3}$ , $ICl X_{4} X^{-}$ , $BrF X_{4} X^{-}$
D $ICl X_{2} X^{-}$ , $ICl X_{4} X^{-}$ , $BrF X_{4} X^{-}$

Answer: C

Lone pairs on the central atom:

ClF X_{3}

2,

ICl X_{4} X^{-}

2,

BrF X_{4} X^{-}

2,

BrF X_{5}

1,

ICl X_{2} X^{-}

3,

IF X_{7}

0. Only the first set has 2 in every member.

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