Aryl halides are extremely less reactive towards nucleophilic substition due to the following reasons
a. Resonance effect
b. Instantibility of phenyl cation
c. Because of possible repulsive
Chose the correct order of reactivity towards nucleophilic substitution reactin of following compounds
| A. |
I > II > III > IV |
| B. |
II > I > III > IV |
| C. |
IV > III > II > I |
 |
| D. |
III > IV > II > I |
Compound having lower electron density have lower nucleophilic character. Lower the electron density at nucleus of compound, higher will be its reactivity towards nucleophilic substitution reaction.