Question

The general electronic configuration of d-block elements is:

• A. \( (n - 1) d^{10}ns^1 \)
• B. \( (n - 1) d^{10}ns^2 \)
• C. \( (n - 1) d^{10}n^2s^3 \)
• D. \( (n - 1) d^n ns^1 \)

Hint:

In d-block elements, the d-orbitals are filled first, and the final configuration involves the \(ns^1\) orbital for the transition elements.

Answer 1

The Correct Option is A

The general electronic configuration of d-block elements (transition metals) is given by \( (n - 1) d^{10}ns^1 \), where \(n\) represents the principal quantum number of the valence shell. This configuration reflects the filling of the d-orbitals followed by the s-orbital.

Step 1: In the d-block, the d-orbitals are filled first, followed by the s-orbital.