Rilo et al. also reported that the conductivity decreases with the increase of the alky chain. In addition, it was demonstrated that with the increase of the alkyl chain length, the role of the electrostatic interaction decreases, which was further verified by Nordness and Brennecke 2 , and they also reported that longer alkyl chain length is responsible for the stronger van der Waals interaction resulted in the decrease in ion dissociation which corresponds the decrease in ionic conductivity. It could be observed that the conductivity of the neat ). The conductivity of [I] -anion with [MPI] + , [BMIM] + , and [HMIM] + cation RTIL system was obtained by automated setup, and estimated values were 0.112±0.0005 s/m, 0.064±0.0001 s/m, and 0.014±0.0002 s/m, respectively. It also follows a similar trend, i.e., with the increase of the alkyl chain of the RTIL, the conductivity of the respected RTIL decreases. It also has matching conductivity values of 0.096 s/m, 0.057 s/m, and 0.014 s/m with previous reported data for [