Question

how are valence electrons and covalency of an element​

Answer 1

Answer:

Valency is the number of electrons will lose or gain in order to make itself stable and attain a configuration. Valency may or may not be equal to the number of valence electrons. ... Covalency is defined for elements that form covalent bonds whereas valency is used for covalent and ionic bonds.

Answer 2

Valency may or may not be equal to the number of valence electrons. Whereas, covalency depends on the number of valance electrons. Covalency is defined for elements that form covalent bonds whereas valency is used for covalent and ionic bonds.