We present a theoretical study on the Static structure factor and the Radial Distribution Functions or Pair correlation functions for Liquid H 2 and Liquid Hg using Reverse Monte Carlo (RMC) simulations technique. We found that Neutron total structure factor S k using RMC for Liquid H 2 is good concord with the Quantum mechanical simulation such as Path Integral Monte Carlo simulation (PIMC) and also we found that for Liquid Hg. RMC results are indistinguishable and they are in good agreement with experimental studies. For Liquid H 2 the radial distribution function goes to zero at very short r that confirms the validity of Pauli's exclusive principle.