If the aluminium salt of an anion X is Al₂X₃, what is the valency of X ? What will be the formula of the magnesium salt of X?

Academic Chemistry NCERT Class 9

To find the valency of X in the aluminium salt Al₂X₃

Element Al X

Valency 3 2

Therefore, the valency of X is two.

The find the formula for the magnesium salt of X:

Element Mg X

Valency 2 2

On crossing the valencies we get the formula of the magnesium salt of X i.e. MgX.

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Updated on: 10-Oct-2022

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