Question

What is the formula for common salt?

Answer 1

• A chemical formula is a representation of a substance's molecular composition in terms of the symbols for the elements that make up the molecule.
• The scientific name of common salt is Sodium chloride.
• The valency of Sodium and Chloride ions are $+1\mathrm{and}-1$.
• By criss-cross method, the molecular formula of Sodium chloride will be $$\begin{gathered} {\mathrm{Na}}^{+}{\mathrm{Cl}}^{-} \\ +1-1 \\ \overline{\mathrm{NaCl}} \end{gathered}$$

Concluding statement -

The formula for common salt is $\mathrm{NaCl}$.