Question

Valence electrons are:

Answer 1

Valence electrons:

• “The electrons present in the outermost shell of an atom are known as the valence electrons.”
• “Valency is the combining capacity of an atom.”

for example

• Consider, Lithium atom which has an atomic number $3$, the electronic configuration of the Lithium $\left(\mathrm{Li}\right)$atom is $1{\mathrm{s}}^{2}2{\mathrm{s}}^1$.
• The number of the valence electron in Lithium is $1$.

The schematic atomic structure of Lithium is given below: