Explain why the dipole moment of chlorobenzene is lower than that of cyclohexyl chloride?
The dipole moment of chlorobenzene is less than cyclohexyl chloride as in chloro benzene because C-Cl bond is sp2 hybridised where as in cyclohexyl chloride the C-Cl bond is SP3 Hybridised . Since sp2 has more s character and more electronegative than sp3. Also, In chlorobenzene resonance gives rise to partial double bond charcter to the carbon- halogen bond, making it stronger by reducing the polarity of the carbon -halogen bond. Hence, chlorobenzene is less polar than cyclohexyl chloride.
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