Question

How to write chemical formula of compounds which have more than two components

Answer 1

Chemical Formula and Equations - Examples and Meanings of Subscripts
For example, the chemical formula for water is H2O which indicates that 2 atoms of Hydrogen combines with 1 atom of oxygen. The chemical formula for sodium chloride (Salt) is NaCl indicating that one atom of sodium combines with one atom of chlorine in a one-to-one ratio. Subscripts are added, following the element symbol, to indicate that the number of atoms of that element in the compound if it is greater than one. For example, the formula for magnesium bromide MgBr2 which indicates that one magnesium atom combines with two bromine atoms.

The following list of Chemical Formula and Equations shows some of the most common chemical formulas.

Na : Sodium

H₂O : Water

C₆H₁₂O₆ : Glucose

C₂H₆O : Alcohol

CaSO₄ : Sulfate Group

H₂S : Hydrogen Sulfide

NaCl : Salt

O₂ : Oxygen

C₂H₆O : Ethanol

C₂H₄O₂ : Vinegar

NH₃ : Ammonia

Mg : Magnesium

C₂H₄O₂ : Acetic Acid

C₄H₁₀ : Butane

NO₃⁻ : Nitrate