Question

Which of the following pairs represent electrophiles?
(a) AlCl₃, H₂O (b) SO₃, NO₂⁺
(c) BF₃, H₂O (d) NH₃, SO₃

Answer 1

the answer is beat number a

Answer 2

Let us answer it

Explanation:

When the reaction occurs, attacking agent attacks and the product is formed.

Type of attacking agents:

1. Free radical : With unpaired electron
2. Nucleophile: With extra electrons. They also act as Lewis base and does Nucleus love. They are either:  
3. Neutral with Lone pair: H₂O , NH₃,
4. Negatively Charged: CN- , X- , OH-
5. Electrophile: With Positive charge has less electrons and act as Lewis acids. They are Neutral or may have  Positive charge.

In the above asked question , the pair that represent electrophile is :

b)SO₃, NO₂⁺