The shape of the intermediate formed In nucleophilic addilion reaction of aldehydes and ketones is

Options

A. Trigonal planar
B. Tetrahedral
C. Trigonal bipyramidal
D. Bent

Answer

To determine the shape of the intermediate formed in the nucleophilic addition reaction of aldehydes and ketones, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- In a nucleophilic addition reaction, a nucleophile attacks the electrophilic carbon atom of the carbonyl group (C=O) in aldehydes or ketones.

2. **Formation of the Intermediate**:
- When the nucleophile attacks the carbonyl carbon, it leads to the formation of a tetrahedral intermediate. This is because the carbon atom, which was previously sp2 hybridized (trigonal planar), becomes sp3 hybridized upon the addition of the nucleophile.

3. **Geometry of the Intermediate**:
- The tetrahedral geometry arises due to the four substituents around the carbon atom: one from the original carbonyl group (the oxygen) and three from the nucleophile and the remaining groups attached to the carbon.

4. **Final Structure**:
- After the formation of the tetrahedral intermediate, the reaction can proceed to form an alcohol or other products, depending on the reaction conditions.

### Conclusion:
The shape of the intermediate formed in the nucleophilic addition reaction of aldehydes and ketones is tetrahedral.

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