Give general electronic configuration of `d`-block elements.

Explanation

To determine the general electronic configuration of `d`-block elements, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Block**: Understand that `d`-block elements are transition metals found in groups 3 to 12 of the periodic table.

2. **General Configuration Format**: The general electronic configuration of `d`-block elements can be expressed as:
\[
...