Which has a longer carbon-methyl bond, 1-butyne or 2-butyne. Explain?

Explanation

To determine which compound has a longer carbon-methyl bond between 1-butyne and 2-butyne, we need to analyze the structures and hybridization of the carbon atoms involved in the carbon-methyl bond in each compound.

### Step-by-Step Solution:

1. **Identify the Structures**:
- **1-butyne** has the structure: CH≡C-CH2-CH3
- **2-butyne** has the structure: CH3-C≡C-CH3

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