The valency of an element depends upon the

Options

A. total number of protons in an atom
B. mass number of an atom
C. total number of neutrons is an atom
D. total number of electrons in the outer most shell of an atom

Answer

D

Explanation

Valency is the measure of the combining capacity of atoms of molecules . Therefore it is the capacity of an atom of a single element to react and combine with electrons numbers of atoms of another element . The electrons present in the outermost shell`//` orbit of an atom are called valence electrons. The valence electrons take part in any chemical reaction because the outermost orbit usually contains more energy than the outermost orbit usually contains more energy than the electrons present in other orbits . the valency of an element depends upon the total number of electrons in the outer most shell of an atom.