What is the hydrocarbon that will not form an additional polymer

A compound which is not a hydrocarbon but will form an additional polymer

The hydrocarbon that will not form an additional polymer is called methane (CH4). This is because it consists of a single carbon atom bonded to four hydrogen atoms and does not contain any double or triple bonds between carbon atoms. As a result, methane does not have the necessary reactive sites to undergo polymerization and form an additional polymer.

On the other hand, a compound that is not a hydrocarbon but will form an additional polymer is ethene (C2H4). Ethene is an unsaturated hydrocarbon containing a double bond between two carbon atoms. The double bond provides reactive sites for polymerization, allowing ethene molecules to combine and form a long-chain polymer called polyethylene. Polyethylene is a commonly used plastic material.