Comment on the statement that elements of the first transition series possess many properties different from those of heavier transition elements.

Explanation

To address the statement that elements of the first transition series possess many properties different from those of heavier transition elements, we can analyze several key differences between these two groups of elements.

### Step-by-Step Solution:

1. **Definition of Transition Series**:
The transition elements are divided into three series:
- First transition series: Scandium (Sc) to Zinc (Zn)
- Second transition series: Yttrium (Y) to Cadmium (Cd)
...