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  4. In the below mentioned compounds the decreasing order of reactivity towards electrophilic substitution is

Q. In the below mentioned compounds the decreasing order of reactivity towards electrophilic substitution isChemistry Question Image

 3051  225 AIEEEAIEEE 2012Organic Chemistry – Some Basic Principles and Techniques Report Error

Solution:

Toluene is having one methyl group which is electron-donating group causing a negative charge on the carbon atom of the ring so it is highly reactive towards electrophile which is already electron deficient. Benzene has a delocalised set of electron cloud which attracts electrophile while chloro and nitro group are electronegative causing positive charge on carbon atom so are not reactive towards electrophilic substitution. shows - effect and shows strong electron-withdrawing effect. So least reactive