Arrange the following in increasing order of C-C bond length : `C_(2)H_(6), C_(2)H_(4), C_(2)H_(2)`.

Explanation

To determine the increasing order of C-C bond lengths in the compounds \(C_2H_6\), \(C_2H_4\), and \(C_2H_2\), we need to consider the type of bonds present in each compound.

### Step-by-step Solution:

1. **Identify the Types of Bonds**:
- \(C_2H_6\) (Ethane) has a single bond between the two carbon atoms.
- \(C_2H_4\) (Ethene) has a double bond between the two carbon atoms.
- \(C_2H_2\) (Ethyne) has a triple bond between the two carbon atoms.
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