Question

Which compound is an unsaturated hydrocarbon?

a) pentane
b) ethyne
c) cyclobutane
d) isopropane

Answer 1

The alkalies are a part of unsaturated hydrocarbon
So it should be B.) ethyne
because methyne aka Ch4 is the most common

Answer 2

Ethyne

Step-by-step explanation:

Hydrocarbons are compounds containing carbon (C) and hydrogen (H) atoms. Here, the carbon-carbon bonds form the skeletal structure in which the C atoms can be linked to form linear chains or cyclic structures.

The C-C bonds are essentially covalent. The bonds can be single or multiple bonds. Structures in which the C atoms are linked by single bonds are called saturated hydrocarbons where multiple bonds between C atoms results in unsaturated hydrocarbons.

In the given examples, ethyne (C₂H₂) is an unsaturated hydrocarbon. Here, each C atom is attached to one H atom via a single bond and to another C atom via a triple bond.