1. Tardigrade
  2. Question
  3. Chemistry
  4. Aryl halides doesn't undergo nucleophilic substitution reactions under ordinary conditions because of 1. approach of nucleophile is retarded 2. carbon carrying halogen atoms is sp3 - hybridised 3. the substrate molecule is destabilised due to resonance 4. partial double bond character between carbon and halogen

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Q. Aryl halides doesn't undergo nucleophilic substitution reactions under ordinary conditions because of
1. approach of nucleophile is retarded
2. carbon carrying halogen atoms is $sp^3$ - hybridised
3. the substrate molecule is destabilised due to resonance
4. partial double bond character between carbon and halogen

KEAMKEAM 2010Haloalkanes and Haloarenes

Solution:

Because of the + R effect of halogen atom, $ CX $ bond of aryl halide has some double bond character, hence it is inert towards nucleophile and approach of nucleophile is retarded.