In the present study, theoretical computations of superconducting state parameters [Electron Phonon coupling strength (λ), Coulomb pseudopotential (µ*), Transition temperature (Tc), Isotope effect exponent (α) and Effective interaction strength (N0V)] have been carried out using first principles pseudopotentials for noble metals. The two sets of non local pseudopotentials, obtained with Kohn-Sham and Lindgren approximations for conduction bandcore exchange are used, while exchange due to conduction electrons are studied through Hubbard and Singwi exchange-correlation functions respectively. The present study confirms that Lindgren approximation is more effective than Kohn-Sham approximation for the computation of physical properties based on form factors and energy wave number characteristic [F(q)] particularly at small q (q<2kf), which is in agreement with assertion made by Moriarty