Alkynyl compounds, unpaired electrons

Hydrocarbons consist entirely of nonpolar C-H bonds with no unpaired electrons. These compounds are relatively unreactive. The substitution of one or more atoms with unpaired electrons into the hydrocarbon backbone creates a hydrocarbon derivative. The unpaired electrons result in polar or charged portions of these molecules. These atoms fall into categories known as functional groups, and they create local regions of reactivity. Alkyl, alkenyl, alkynyl, and aryl groups may also be considered functional groups in some circumstances as described in the previous skill. 

Alkynyl Compounds Carrying Unpaired Electrons in Remote Substituents... 

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