Studying the x- ray atomic Scattering form Factor and Nuclear Magnetic Shielding Constant for Be atom in its Excited state (1s2 2s 3s) and the Be - like ions. Baghdad Sci.J [Internet]. 2015 Mar. 1 [cited 2024 Apr. 27];12(1):204-9. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/541