Question

What is the relationship between the valence of an element and the number of valence electrons in its atom

Answer 1

valence electron means number of electrons in last shell whereas valency mean number of electrons gained or loosed or shared by an electron during chemical reaction

Answer 2

Valence electrons are the no. of electrons present in the last shell/ orbit of the atom..whereas valency is the no. of atoms the atom can accept or give to become stable