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NEET levelSingle correct optionDifficulty 1 of 3cb121

Which of the following is a polar molecule?

A $PCl X_{5}$
B $CH X_{2} Cl X_{2}$
C $CCl X_{4}$
D $BeCl X_{2}$

Answer: B

CH X_{2} Cl X_{2}

is tetrahedral but has two different kinds of substituents, so bond dipoles do not cancel.

CCl X_{4}

(tetrahedral),

BeCl X_{2}

(linear) and

PCl X_{5}

(trigonal bipyramidal) are symmetrical and non-polar.

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