Question

If the number of hydrogen atoms in an alkene is 16, then what is the name of this hydrocarbon compound?

• A. Hexene
• B. Octene
• C. Heptene
• D. Decene

Answer 1

The correct option is B

Octene

The general formula for alkene is $C_n{H}_{2n}$. So the number of hydrogen atoms is double compared to the number of carbon atoms.

If the number of hydrogen is 16. So from the general formula of alkene it is clear that $2n$=16

So $n$=8

therefore the number of carbon atoms is 8.

So, the name of the compound is Octene. Where "oct" is the word root for 8 carbon atoms and "ene" is the name from the alkene family.