Writing Chemical Formulae

Copper sulphate on treatment with Potassium iodide precipitates cuprous Iodide $\left({\mathrm{Cu}}_2{\mathrm{I}}_2\right)$, liberates Iodine gas and also forms potassium sulphate. Explain the formation of formula of Cuprous Iodide by criss-cross method. (The valency of Cuprous is one)

The formula of calcium oxide is $\mathrm{CaO}$.

The chemical formula of calcium oxide is:

The anion present in aluminium oxide is aluminium.

The chemical formula of aluminium oxide is ${\mathrm{Al}}_2{\mathrm{O}}_3$.

The formula of aluminium oxide is:

Write the chemical formula of calcium hydroxide. Also mention its cation and anion.

Write the chemical formula of calcium hydroxide.

Write the chemical formula of sodium nitrate. Also mention the cation and anion in it.

Write the chemical formula of sodium nitrate.

Write the chemical formula of magnesium chloride. Also mention the cation and anion in magnesium chloride.

Write the chemical formula of magnesium chloride. Also mention the cation and anion in magnesium chloride.

Write the chemical formula of magnesium chloride. Also mention the cation and anion in magnesium chloride.

Write the chemical formula of hydrogen chloride.

Write the chemical formula of calcium hydroxide

Write the chemical formula of sodium nitrate

Which of the following is the chemical formula of magnesium chloride?

Which of the following is the chemical formula of hydrogen sulphide?

Which of the following is the chemical formula of hydrogen chloride.

Carbonate ion is the anion in ${\mathrm{Na}}_2{\mathrm{CO}}_3$.