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JEE Main levelOne or more correct optionsDifficulty 2 of 3cb070

Select all the species in which the central atom is $s p^{3}$ hybridised.

A $BeCl X_{2}$ (gaseous monomer)
B $NH X_{4} X^{+}$
C $NH X_{2} X^{-}$
D $CCl X_{4}$

Answer: B, C, D

CCl X_{4}

(4 bond pairs),

NH X_{2} X^{-}

(2 bond pairs + 2 lone pairs) and

NH X_{4} X^{+}

(4 bond pairs) all have four electron domains. Gaseous

BeCl X_{2}

has two domains and is

s p

.

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