الخلاصة
The division Technique has been used for the analysis of atomic open- shell of Lithium atom in the(1S22S) state by using Hartree-Fock(HF) wavefunction published by W.Weiss. The HF method is widely used and its based on the variational theory [1]. The aim of this work to study the Standard deviation and nuclear magnetic shielding constant for each shell where there are three shells for Li- atom (K-shell, KL(singlet),KL(triplet ) |