There exists a relation in asymmetric, inertial and variable of moment of inertia parameters that describes rotational band energies. The present study indicates the splitting of the so-called γ-band into two separate rotational energy branches of odd spin (3+, 5+, 7+…) and even spin (2+, 4+, 6+, 8+…).

The staggering indices S(I, I−1, I−2) versus spin (I ) graphs have been plotted using known experimental data along with empirical calculations of Varshney et al (2007 Phys. Scr. 75 451) in some nuclei of mass region A ∼ 100-110. Most of the transional nuclei of Mo, Ru and Pd isotopes have been found to be triaxial. The known B(E2) values of these nuclei are also close to the triaxial rotor model predictions (Davydov A S and Filippov G F 1958 Nucl. Phys. 8 237).