Question

write a short note on significance of valence electron and valency​

Answer 1

Explanation:

refer to the above attachment ^_^

please mark it as brainliest ❤

Answer 2

ello

a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair