Comment on the C-C bond length for `C_(2)H_(6)` and `C_(2)F_(6)` compounds

Explanation

To compare the carbon-carbon bond lengths in the compounds C₂H₆ (ethane) and C₂F₆ (perfluoroethane), we can analyze the molecular structures and the effects of electronegativity on bond lengths.

### Step-by-Step Solution:

1. **Draw the Structures:**
- For C₂H₆ (ethane), the structure consists of two carbon atoms bonded to each other, with six hydrogen atoms attached to these carbon atoms. The structure can be represented as:
```
H H
...