Question

What are valence electrons​

Answer 1

A valence electron is an outer shell electron that is associated with an atom. A valence electron can also participate in the formation of a chemical bond. If the outer shell is not closed in one single covalent bond both of the atoms in the bond will contribute to one valence so that it can form a shared pair.

Answer 2

A valence electron is basically the outer shell of an electron that is somehow associated with an atom so it can create a formation of chemicals and elements. It is responsible for the chemical elements in an atom.