What suffix is used in the nomenclature of alkynes?

In the nomenclature of organic compounds, alkynes are characterized by the presence of at least one triple bond between carbon atoms. The suffix that indicates this type of bonding in alkynes is "-yne." This suffix is critical in distinguishing alkynes from other classes of hydrocarbons based on their bonding structure.

For example, the simplest alkyne, ethyne, has two carbon atoms connected by a triple bond, and its nomenclature reflects this structure with the "-yne" suffix. In contrast, the suffix "ene" is used for alkenes, which contain at least one double bond, while "-ane" designates alkanes, which are saturated hydrocarbons with single bonds only. The suffix "-ol" is used to indicate the presence of alcohol functional groups rather than a type of hydrocarbon bond.

Thus, "B. -yne" correctly identifies the suffix specific to alkynes, aligning with the rules of hydrocarbon nomenclature.