Give the decreasing order of stability at room temperature of the three isomeric pentanes.

Explanation

To determine the decreasing order of stability at room temperature of the three isomeric pentanes, we need to analyze the structures of each isomer and their branching.

### Step-by-Step Solution:

1. **Identify the Isomeric Pentanes**:
- The three isomeric forms of pentane are:
- **n-Pentane** (straight-chain)
- **Isopentane** (or methylbutane, one branch)
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