Question

Write The valency of Sodium, Calcium, Oxygen.

Answer 1

Answer:

valency of sodium -1

valency of calcium-2

and

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valency of oxygen-2

because its need two atoms of hydrogen to form water.

Explanation:

hope it is helpful!

Answer 2

Answer:

Valency of Sodium = 1

Valency of Calcium = 2

Valency of Oxygen = -2

Hope it helps you.