Q.

Which of the following molecules has zero dipole moment?

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a

CCl4

b

CHCl3

c

CH2Cl2

d

CH3Cl

answer is A.

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Detailed Solution

If a the molecule is symmetrical, then four bond dipoles cancel each other out (i.e. the vector sum of the dipoles equals zero), resulting in a zero dipole moment for the entire molecule.

Therefore, carbon tetrachloride will have zero dipole moment because molecule has symmetry.

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Therefore, 1 is the correct option.

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Which of the following molecules has zero dipole moment?