Highly unsaturated organic compounds containing a carbon–carbon triple bond, with general formula C, of which acetylene, or ethyne, C2H2 is the simplest member. Alkynes are emitted to the atmosphere mainly as a result of incomplete combustion.

ALKANES ARE MOLECULES, MADE OF CARBON & HYDRON ATOMS THAT HAVE THE GENERAL FORMULA, ( N ) CBN + ( 2N-2 ) HDR WHEREIN: N = THE NUMBER OF CARBON ATOMS CYCO-PROPYNE, CYCLO-PENTYNE & CYCLO-HEPTYNE ARE ALL ALKYNES

Alkynes are hydrocarbons which have a triple bond between two carbon atoms, i.e. they are unsaturated organic compounds.

These compounds are also similar to alkanes. They have the general formula C2H2n-2 corresponding to carbon chains with a triple carbon-carbon bond included. The simplest member of this family is ethyne (also known as acetylene). The triple bond makes these compounds very reactive. Some simple alkynes are listed below

Hydrocarbons incorporating a carbon-carbon triple bond (general formula CnH2n-2).

Hydrocarbons in which there is a triple bond between two carbon atoms.