Among the following , the molecule with the lowest dipole moment is:

a. CH3Cl

b. CH2Cl2

c. CHCl3

d. CCl4

Please explain briefly

CCl4 has the lowest dipole moment amongst CCl4, CHCl3, CH2Cl2, CH3Cl. In fact, CCl4 has no dipole moment because it is a symmetrical tetrahedral molecule. The individual dipole moments of C-Cl bonds cancel out each other in CCl4 whereas in other molecules a net dipole moment is produced.

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