Question

Difference between formula and Valency​

Answer 1

Answer:

The valency of a molecule is zero. Valency is calculated by calculating number of electrons present in outermost orbitals of atom of element. For example : Valency of Nitrogen is 3 because outermost orbital contain 3 electron.

Answer 2

Answer:

The valency of hydrogen and all metals is positive. The valency of non- metals is negative. The valency of a molecule is zero.

Valency is calculated by calculating number of electrons present in outermost orbitals of atom of element.

For example : Valency of Nitrogen is 3 because outermost orbital contain 3 electron.

Valency is the combining capacity of one element with the other element.

1. Atom of chlorine combines with 1 atom of hydrogen to form HCl (hydrogen chloride) The valency of chlorine is thus 1 .

2. 1 atom of carbon combines with 4 atoms of hydrogen to form CH

4

(methane). The valency of carbon is thus 4.