HTML - Subscript

For a subscript we will use the <sub> tag, as you can see:

html<p>This is a <sub>subscript text</sub></p>

Demo

This is a subscript text

Subscript - Practical applications

The subscript tag, same as the superscript tag can be used at writing the mathematical expressions. Still, the place where we most find it are the chemical formulas.

html<p>
	H<sub>2</sub>0 - Water<br />
	O<sub>2</sub> - Oxygen<br />
	CO<sub>2</sub> - Carbon dioxide<br />
	H<sub>2</sub>SO<sub>4</sub> - Sulfuric acid
</p>

Demo

H20 - Water
O2 - Oxygen
CO2 - Carbon dioxide
H2SO4 - Sulfuric acid

As you can see in the example presented above its use is very practical.