1.

p-dichlorobenzene has higher melting point than ortho and meta dichloro benzene. Why?

Answer»

Solution :The MELTING point of p-dichloro benzene is higher than the melting point of the CORRESPONDING ortho and META ISOMERS. The higher melting which leads to more close packing of its moleules m the crystal lattice and consequently strong intermolecular ATTRACTIVE forces which requires more energy for melting.
p-dichlorobenzene `gt` o-dichlorobenzene `gt` m-dichlorobenzene


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