Name a functional group whose IUPAC name has only a prefix but no suffix. Give one example.

Explanation

To answer the question, we need to identify a functional group whose IUPAC name consists only of a prefix and no suffix.

### Step-by-Step Solution:

1. **Understanding Functional Groups**:
- Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.
- The IUPAC naming system includes prefixes, infixes, and suffixes to denote different types of compounds and their structures.

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