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| 1. |
Discuss the nature of C-X bond in the haloarenes. |
| Answer» Solution :Due to higherr electronegativity of halogen (X) over carbon, the C-X bond in haloarenes is polar. Further, the lone pair of electrons on the X atom are delocalized over the benzener ring. As a result, C-X bondin haloarenes acquires some double bond character (for resonance structures of chlorobenzene). due to donation of the lone paiir of electrons on X towards the benzene ring and PARTIAL double bond character of the C-X bond, the C-X bond in haloarenes is less polar than in ALKYL halides. this is supported by the observation that dipole MOMENT of chlorobenzene (1.69D) is little lower than that of `CH_(3)CL` (1.86D). | |