Question

how a electron withdrawing group showing -I effect also acts as an eleectron donating group and shows +M effect?​

Answer 1

Answer:

An electron withdrawing group (EWG) is a group that reduces electron density in a molecule through the carbon atom it is bonded to. ... EWGs make electrophiles stronger, because the electron-withdrawing effect makes any carbon center even more electron deficient than before.

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Answer 2

Answer:

An electron donating group (EDG) has the net effect of increasing electron density in a molecule through the carbon atom it is bonded to. By increasing electron density on adjacent carbon atoms, EDGs change the reactivity of a molecule: EDGs make nucleophiles stronger.

Explanation:

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