In the present study the back-bending phenomena of moment of inertia are described at high-spin yrast bands of even-even 110-118 Te isotopes. The Fermi energy, square of rotational frequency and the moment of inertia of the nuclei have been calculated from available experimental data. An interesting nuclear feature emerging from this study concerns the evolution of the moment of inertia, and the yrast line indicates about the nuclear shape. Fermi energy and the moment of inertia as a function of even neutron number of 110-118 Te isotopes have been studied systematically. The moment of inertia as a function of the square of the rotational energy for even neutrons N = 58 to 66 in Te isotopes indicates the nature of back-bending properties. The investigation of back-bending phenomena in ordinary space for even-even Te isotopes with even neutron N = 58 to 66 are carried out and compared with gauge space.

<p class="1Body">We have reported the systematic magnetic quadrupole reduced transition probabilities B (M2) between 9/2⁺ and 5/2^- in odd ⁵⁹Cr to ⁶⁹Se nuclei for neutron N=35. At present work the calculated B(M2) values are 0.079 W.U., 0.067 W.U., 0.230 W.U., 0.412 W.U., 0.060 W.U., and 0.044 W.U. for ⁵⁹Cr, ⁶¹Fe, ⁶³Ni, ⁶⁵Zn, ⁶⁷Ge, and ⁶⁹Se nuclei respectively. The theoretical calculations of the reduced transition probabilities were compared to the previous experimental values. The width of isomeric levels, mean-life and Weisskopf hindrance factors in the odd ⁵⁹Cr to ⁶⁹Se nuclei were also calculated. The isomeric levels 9/2⁺ were systematically studied as a function of even atomic number from 24 to 34. It is shown that the isomeric levels are increases from Z= 24 to Z= 28 and then decreases monotonically up to Z= 34.</p>