The valence electrons are outer that the shell electrons with an atom and can participate in the formation of chemical bonds.
Valence electrons are outer shell electrons with an atom and that can participate in the formation of chemical bonds. In single covalent bonds, typically both atoms in the bond contribute one valence electron in order to form a shared pair.
The ground state of an atom is the lowest energy state of the atom. When those atoms are given energy, the electrons absorb the energy and move to a higher energy level.
So when ever there is any chemical reaction, the outermost. Then its bond are involving in the formation of bonds.
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