Nuclear energy level has been calculated using several models depending on the least square 
fitting and the experimental data. The energy level distribution have been also calculated. In 
addition the Yrast line has been plotted. Palladium and Molybdenum isotopes 102Mo and 102Pd
energy level distribution have been calculated by the nuclear softness model, variable moment of 
inertia model, Anharmonic vibrator- model (AVM1 and AVM2), exponential model (exp- model) 
and interaction boson model (IBM) in O6. Experimental results have been used to calculate the 
unknown factors of the used equations. The backbending of the energy against the momentum 
have been also calculated and discussed.