Name of the follwing groups:
a. `C_(6) H_(5)-`, b. `C_(6)H_(5)CH_(2)-`
C. (C_(6)H_(5))_(2) CH-`, d. `(C_(6)H_(5))_(3) C-`
e. `C_(6) H_(5) CH-`, f. `C_(6) H_(5) -overset(|)underset(|)(C)-`

Explanation

To name the given groups, we will analyze each one based on its structure and the substituents present. Here’s a step-by-step breakdown of the names for each group:

### Step-by-Step Solution:

1. **Group a: `C6H5-`**
- This group consists of a phenyl group, which is derived from benzene (C6H6) by removing one hydrogen atom.
- **Name:** Phenyl group

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