OICC Press Journal of Theoretical and Applied Physics 2251-7235 19 3 2025 06 30 Calculate the nuclear structure for the 72,74,76 Kr isotopes by using NuShellX@MSU code 10.57647/j.jtap.2025.1903.28 EN Sara F. Hadi Department of Physics, Faculty of Education for Girls, University of Kufa, Najaf, Iraq Ali K. Hasan Department of Anesthesia, College of Health and Medical Technology, University of Alkafeel, Najaf, Iraq Journal Article 2025 06 30 Effective f5pvh interactions have been identified, and the NuShellX@MSU code within the fp-shell was employed to calculate the energy levels and electromagnetic transition probabilities of the 72,74,76 Kr nucleus. The use of the nuclear shell model utilising the f5pvh interaction within the fp-shell demonstrates success, as evidenced by the concordance with both experimental and theoretical data.