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anybody please tell me +R & …

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anybody please tell me +R & -R effects in simple language??? Also tell +I & -I effects?????
  • 2 answers

Rohan Khokhar 7 years, 2 months ago

I effect also

Abhinesh Tiwari 7 years, 2 months ago

When transfer of electron away from the group and towards the conjugated system that is called +R effect.that is activate benzene nucleous for electrophilic substitution reaction at ortho and para position

And when tranfer of electron towards the group and away from the conjugated system is called   -R effect 

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