Question

Write true or false. Correct the false statement.

The chemical formulae of different compounds can be written easily if the symbols and the valencies of the elements are known.

• A. True
• B. False

Answer 1

The correct option is A True

• 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.
• For writing the chemical formula, the criss-cross method is used for which the symbols and valencies of elements involved are to be known.
• The symbol is the symbolic representation of an element. It is the first alphabet of the name of an element in English, Greek, or Latin in capital letters.
• The combining capacity of an element is known as its valency.
• For example - The chemical formula of Sodium chloride is $$\begin{gathered} {\mathrm{Na}}^{+}{\mathrm{Cl}}^{-} \\ +1-1 \\ \overline{\mathrm{NaCl}} \end{gathered}$$, therefore the chemical formula is $\mathrm{NaCl}$.

Hence, The given statement is True.