Question

Please help me with this question
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Answer 1

Which of the following has maximum -I effect?

• $-NO_2$

Since it has 3 electronegative atoms so it attracts the electron intensity which in turn shows the -I effect...~

Answer 2

• Lone pair is present at Centre i.e at N .
• Also Oxygen is + ,so it requires electron

It is be a electrophilic compound so electron loving.

Yes NO_2 has maximum -i effect