The formula of the molecule given above can also be written as C4H10.
If you count all the carbon atoms you will discover, they are four while that of hydrogen is 10.Thus, the name of the compound is ISOBUTANE [I -BUTANE]; it is also called 2 - methyl propane. Isobutane is used majorly as petrol additive in refineries; it is used in the production of isooctane, which is a octane gasoline component that enhances the octane rating and anti-knock properties of gasoline.
