Simply by observing the existence of the Cherenkov radiation from a particle, one can determine its relative velocity with respect to the light speed in medium. Knowing that, one can determine the particle momentum.
It is a ring formed carbon skeleton. The smallest possible cyclic hydrocarbon is cyclopropane (triangular C3H6) together with cyclobutane both being rather unstable (degration to linear propene and 1-butene). Five and six membered rings are quite common.
Alkanes are saturated hydrocarbons. Saturated means that the hydrocarbon has only single bonds and that the hydrocarbon contains the maximum number of hydrogen atoms for each carbon atom. Unsaturated hydrocarbons contain multiple bonding and contain less than the maximum number of hydrogens per carbon.thane, C2H6, is an alkane and is an example of a saturated hydrocarbon. Ethene, C2H4, is an alkene and is an example of unsaturated hydrocarbon. Ethyne, C2H2, is an alkyne and is also an example of unsaturated hydrocarbon. Aromatic compounds are unsaturated hydrocarbons and contain a benzene ring.