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JEE Main levelSingle correct optionDifficulty 2 of 3cb068

In which of the following is the hybridisation of the central atom different from that in the other three?

A $O X_{3}$
B $CO X_{2}$
C $NO X_{2} X^{-}$
D $SO X_{2}$

Answer: B

The central atoms of

NO X_{2} X^{-}

,

SO X_{2}

and

O X_{3}

each have 3 electron domains (two bonds and one lone pair, or the equivalent), so they are

s p^{2}

. In

CO X_{2}

carbon has only 2 domains and is

s p

.

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