Question

what is valency ? write valency of the following elements hydrogen,oxygen,sodium, chlorine,potassium,carbon,aluminium and calcium​

Answer 1

Answer:

valency is

a measurement of the power of an atom to combine with others, by the number of hydrogen atoms it can combine with or take the place of

Answer 2

Answer:

valency is the combining capacity of an element.

Valencia of -

H = 1

O = -2

Na = 1

Cl = -1

Al = +3

Ca = 2