Thank you for your response and suggestion to my question .Can you clear me one more things , like if we neglect the effect of core electron as well as other valence electron then the radial distribution of the single valence electron would be whatever we got from Hydrogen atom problem replacing nuclear charge by Ze. Am I right ?Then we can plot the wave function and we will get some rough idea about the radial distribution of the electron. But my question is ,if we consider the other factor relevant to the system then how much will it differ from the wave function obtained earlier.