Question

what is valency?Give the Valencia of the following oxygen ,hydrogen,sodium,magnesium,chlorine​

Answer 1

Answer:

oxygen have 2 valency

Explanation:

if we distribute the electron 2 8 2 in his last cell it has two electron that's why it has valency two

Answer 2

Answer:

oxygen=-2

hydrogen =+1

sodium =+1

magnesium =+2

chlorine =-2

Explanation:

Valency is the combining capacity of the atoms to form a molecule either with same or different elements is defined as valency.