Question

What is valency? Give the valencies of the following: oxygen, hydrogen, sodium, magnesium, chlorine.

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Solution

Valency is the capacity of an atom to combine with the other atoms to form compounds. The valencies of the following atoms are: Oxygen (O) : 2 Hydrogen (H) : 1 Sodium (Na) : 1 Magnesium (Mg) : 2 Chlorine (Cl) : 1

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