which is more reactive nucleophile among the following pairs?

1. NH₂^- NH₃

2. Cl^- I^-

3. H₂O NH₃

4. HS^- HO^-

5. H₃O⁺ H₂O

6. NH₃ NH⁺₄

Dear Dinesh,

Here is the table for reference. You should memorize it, it's useful in many reactivity questions.

Very Good I-, HS-, RS

Good Br-, HO-, RO-, NC-, N3-

Fair NH3, Cl-, F-, RCO2-

Weak H2O, ROH

Very Weak RCO2H

The answers to your questions would be:

1. NH2^-

2. I^-

3. NH₃

4. HS^-

5. H₂O

6. NH₃

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