What type of hydrocarbons are fully saturated with hydrogen?

Hydrocarbons that are fully saturated with hydrogen are known as alkanes. Saturation in this context means that the hydrocarbon contains the maximum number of hydrogen atoms per carbon atom, which occurs when every carbon-carbon bond is a single bond. This structure prevents any additional hydrogen atoms from being added to the molecule.

Alkanes, also referred to as paraffins, follow the general formula CnH2n+2, where n is the number of carbon atoms. For example, if there are two carbon atoms (C2), the formula would yield C2H6, indicating that it is saturated with hydrogen.

The other types of hydrocarbons mentioned, such as alkenes and alkynes, contain double and triple bonds, respectively. These bonds reduce the number of hydrogen atoms that can bond with the carbon atoms, resulting in unsaturation. Dienenes are a specific type of alkene that contains two double bonds, further emphasizing the absence of full saturation. Therefore, only alkanes fit the criterion of being fully saturated with hydrogen.