The general valence shell electronic configuration of transition elements is

Options

A. `(n -1)d^(0-10)ns^(2)`
B. `(n-1)d^(1-10) ns^(1-2)`
C. `(n - 1)d^(1-10)ns^(2)`
D. `(n - 1)d^(1-10) ns^(0-2)`

Answer

D

Explanation

The `d`-block elements contains their valence electrons in both the `ns` and `(n - 1)d` orbitals, but not in the `np` orbitals.