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JEE Main levelSingle correct optionDifficulty 2 of 3cb066

The carbon hybrid orbital used in the C-H bond has the highest s-character in

A $C X_{2} H X_{2}$
B $C X_{2} H X_{4}$
C $CH X_{4}$
D $C X_{6} H X_{6}$

Answer: A

The s-character is 25% for

s p^{3}

(

CH X_{4}

), 33.3% for

s p^{2}

(

C X_{2} H X_{4}

and

C X_{6} H X_{6}

) and 50% for

s p

(

C X_{2} H X_{2}

). Ethyne therefore has the highest value.

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