Question

Which amongst the following molecules contains the maximum number of hydrogen atoms in it?

• A. $HCl$
• B. $HN{O}_3$
• C. $N{H}_3$
• D. $N{H}_{4}Cl$

Answer 1

The correct option is D $N{H}_{4}Cl$

The subscripts of elements in a chemical formula represent the no. of atoms of that element in a molecule. If there is no susbscript for a symbol, it represents one atom of that element.

$$\begin{array}{cc}\text{Molecule}& \text{No. of H atoms}\\ HCl& \text{1}\\ HN{O}_3& \text{1}\\ N{H}_3& \text{3}\\ N{H}_{4}Cl& \text{4}\end{array}$$

Hence, $N{H}_{4}Cl$ contains the maximum number of hydrogen atoms.