Give reasons for the following in one or two sentences `'` The central carbon`-` carbon bond in `1,3-`butadiene is shorter than that in `n-` butane `'`.

Explanation

To explain why the central carbon-carbon bond in 1,3-butadiene is shorter than that in n-butane, we can follow these steps:

### Step 1: Understand the Structures
- **n-Butane** (C4H10) has a straight-chain structure with all carbon atoms connected by single bonds (sp³ hybridization).
- **1,3-Butadiene** (C4H6) contains a carbon-carbon double bond between the first and second carbon atoms, and a single bond between the second and third carbon atoms (sp² hybridization).

### Step 2: Identify the Bond Types
- In n-butane, the central carbon-carbon bond is a single bond (sigma bond) between sp³ hybridized carbons.
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