Question

Identify and name the metal out of the following element whose electronic configurations are given below. $2,1$

Answer 1

Electronic Configuration: The electronic configuration of an element is a symbolic notation of the manner in which the electrons of its atoms are distributed over different atomic orbitals.

• The electronic configuration: $2,1$
• So, the atomic number of element = 2 + 1 =3
• Hence, the element is Lithium.
• The electronic configuration is represented by: Lithium (Z=$3$)= $1{\mathrm{s}}^{2}2{\mathrm{s}}^1$

Therefore, The metal is Lithium ($\mathrm{Li}$).