In the Implicit solvent model, it is assumed that continuum solvent media can be replaced by the homogeneous polarizable medium. This model considers thermally averaged and usually isotropic solvents, therefore, only a small number of parameters are required to represent the solvent with reasonable accuracy. The main parameter is the dielectric constant (ε) which is responsible for defining the degree of the polarizability of various solvents. In comparison to the explicit solvent model, this model doesn't consider the coordinate of an individual molecule, therefore, found to be computationally not too expensive. There are many implicit solvent models are developed, e.g. Polarised Continuum Model (PCM), universal solvent model (SMD) etc., of which PCM has been used to study the chemical properties of molecule/cluster in the solvent .