NON - METALS
VALENCY OF NON-METALS
The number of electrons accepted by a non metal is called valency of the non metal. For example, one atom of chlorine accepts 1 electron to form a negative chloride ion (Cl–), so chlorine is a non-metal. Here because an atom of chlorine gains 1 electron so the valency of chlorine is 1.
Cl + e- Cl–
In the same way, an atom of oxygen gains 2 electrons so its valency is 2.
O + 2e- O2-