Which one of following does not have sp2 hybridized carbon? a)Acetone b)Acetamide c)Acetonitrile d)Acetic acidCorrect answer is option 'C'. Can you explain this answer?

Question

Which one of following does not have sp2 hybridized carbon? a)Acetone   b)Acetamide  c)Acetonitrile d)Acetic acidCorrect answer is option 'C'. Can you explain this answer?

Answer

Understanding Hybridization in Carbon Compounds
To determine which compound does not have sp² hybridized carbon, we first need to understand the concept of hybridization.

What is sp² Hybridization?
- sp² hybridization occurs when one s orbital and two p orbitals mix to form three equivalent sp² hybrid orbitals.
- This hybridization is typical for carbon atoms involved in double bonds or bonded to electronegative atoms.

Analyzing the Compounds
1. **Acetone (C₃H₆O)**:
- Structure: CH₃-CO-CH₃
- Contains a carbonyl group (C=O) indicating one carbon is sp² hybridized.
2. **Acetamide (C₂H₅NO)**:
- Structure: CH₃-CO-NH₂
- The carbonyl group here also means that one carbon is sp² hybridized.
3. **Acetonitrile (C₂H₃N)**:
- Structure: CH₃-C≡N
- The carbon bonded to the triple bond (C≡N) is sp hybridized, while the other carbon is sp³ hybridized.
4. **Acetic Acid (C₂H₄O₂)**:
- Structure: CH₃-COOH
- The carbonyl carbon in acetic acid is sp² hybridized.

Conclusion
- Among the options, **Acetonitrile (option C)** is unique because it contains one carbon in a triple bond (sp hybridized) and another carbon that is sp³ hybridized.
- Therefore, **Acetonitrile does not have any sp² hybridized carbon**.
In summary, option C (Acetonitrile) is the correct answer as it lacks sp² hybridized carbon.

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