A quantitative study has been made of electron scavenging processes in -irradiated liquid hydrocarbons: n-pentane, cyclopentane, n-hexane, cyclohexane, 3-methylpentane, 2,3-dimethylbutane, 2,2-dimethylbutane, 2,2,4-trimethylpentane, and n-octane. The benzene yield observed upon electron scavenging by bromobenzene in the hydrocarbon solutions can be quantitatively described by an empirical model developed by Schuler and coworkers. The ion-pair yields and the reactivity parameters for electron scavenging were obtained by the analysis of data. The results indicate that the total ion-pair yields in liquid alkanes are about 4 and do not differ very much from the gas-phase values. The ranges of electrons in the hydrocarbons studied were also calculated based on a model in which a simple exponential distribution was assumed for initial electron-positive ion separation distances.