What is the basic difference between the electronic configurations of transition and inner-transition elements?

Explanation

To answer the question regarding the basic difference between the electronic configurations of transition and inner-transition elements, we can break down the information into clear steps.

### Step-by-Step Solution:

1. **Define Transition Elements:**
Transition elements, also known as d-block elements, are characterized by the filling of d orbitals. Their general electronic configuration can be represented as:
\[
\text{n-1}d^{1-10} \, \text{ns}^{1-2}
...