Question

Write down the formulae of calcium oxide

Answer 1

Chemical formula:

• A chemical formula combines two or more symbols and it represents a chemical compound.
• A chemical formula gives the type and number of elements that are found in a chemical compound.

Chemical formula of calcium oxide:

• The chemical formula of Calcium oxide is $\mathrm{CaO}$.
• The molecule is formed by the calcium cation Ca²⁺ and the oxygen anion O^2-, which form an ionic bond.
• Calcium oxide appears as an odorless, white, or gray-white solid in the form of hard lumps.