what is the name of this hydrocarbon? o 1 - methylbutane o 2 - methylbutane o 2 - methylpropane o 3…

Answer:

C. 2 - methylpropane

Explanation:

Step1: Identify main carbon - chain

The longest continuous carbon - chain has 3 carbon atoms, so the parent alkane is propane.

Step2: Locate the substituent

There is a methyl group ($-CH_3$) attached to the second carbon atom of the propane chain. So the name is 2 - methylpropane. 1 - methylbutane is incorrect as the longest chain is mis - identified. 2 - methylbutane has a 4 - carbon parent chain with a methyl at the second carbon. 3 - methylpropane is an incorrect naming as the numbering of the carbon atoms in the parent chain is wrong for this structure.