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Which of the following has the highest d...

Which of the following has the highest dipole moment?

A

o-Dichlorobenzene

B

m-Dichlorobenzene

C

p-Dichlorobenzene

D

All have equal values

Text Solution

Verified by Experts

The correct Answer is:
A

In p-dichlorobenzene, the two `C-Cl` bond dipoles (equal in magnitude and opposite in direction) cancel each other. In o-dichlorobenzene, the vertical component of one `C-Cl` bond dipole reinforces the bond dipole of other `C-Cl` bond dipoles (equal in magnitude and opposite in direction) cancel each other. In o-dichlorobenzene, the vertical component of one `C-Cl` bond dipole reinforces the bond dipole of other `C-Cl` bond while in m-dichlorobenzene, the vertical component of one `C-Cl` bond dipole opposes the bond dipole of another `C-Cl` bond.
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