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The lone pair of electron present on the halogen atom overlaps with the adjacent pi bond electrons of the benzene ring and get delocalised. As a result of this the carbon-halogen bond strength increases and halogen atom can't be displaced easily.

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11y ago
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12y ago

The three methyl groups of neopentyl halide block the approach of a nucleophile in a nucleophilic substitution reaction.

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Q: Why aryl halides gives nucleophilic substitution very slowly?
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