Question

An element having the electronic configuration [Ar]3d²4s² belongs to

(a) s-block elements 

(b) p-block elements

(c) d-block elements

(d) f-block elements

Answer 1

Correct option is (c) d-block elements

[Ar]3d³4s² electronic configuration means Z = 23 (V). In the element last electron entres in 3d-orbital.

Elements in which the last electron is filled in d-orbital are known as d-block element.