Question

An element has a valency of +3.

What will be the formula of its carbonate?

Answer 1

Valency:

• The combining capacity of an element is called valency.
• Different elements have different combining capacities.
• It is also defined as the number of electrons gained, lost, or shared by it with other atoms during a chemical change.
• For example,in ${\mathrm{H}}_2\mathrm{O}$, two atoms of hydrogen combine with one atom of oxygen to form a molecule of water. Here the valency of hydrogen is 1 and of oxygen is 2.

If an element has a valency of +3, then the formula of its carbonate will be ${\mathrm{M}}_2{\left({\mathrm{CO}}_3\right)}_3$.

Here, $\mathrm{M}$ will be an element whose valency is +3.

For example:

• ${\mathrm{Al}}_2{\left({\mathrm{CO}}_3\right)}_3$