Silver is a transition metal but zinc is not.

Explanation

To understand why silver is considered a transition metal while zinc is not, we need to look at the definitions and electronic configurations of these elements.

### Step-by-Step Solution:

1. **Definition of Transition Metals**:
- Transition metals are defined as elements that have partially filled d orbitals in their elemental or common oxidation states. This means that the d subshell must contain between 1 to 9 electrons (d1 to d9).

2. **Electronic Configuration of Silver**:
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