Question

3. Which is the weakest nucleophile?
(1) Cho (2) CH CHO
(3) (CH), CHO (4) (CH).CO​

Answer 1

Dear Student,

◆ Answer - (4) (CH).CO

(CH).CO is the weakest nucleophile.

● Explanation -

Nucleophile is substance that donates extra electrons. Strength of nucleophile depends upon the steric hindrance of central atom. As (CH).CO has more steric hindrance, electrons are free, thus it will be weaker nucleophile.

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Answer 2

(CH).CO is the weakest nucleophile.

Option: (4)

Explanation:  

• A nucleophile is a substance which gets attracted to the positive charge of the electrophile substance.

• Near the weakest nucleophile is propanone. Propanone has a large value of steric hindrance.  

• This is because of the presence of two large methyl group which prevents the electrophile to come in contact with the central atom in which the negative charge of the electron is concentrated. Hence Propanone is the weakest nucleophile.

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