[en] The proton neutron interacting boson model (IBM-2) has been used to make a systematic study of Strontium isotopes in this mass region of A ∼ 80 with 38 $⩽<!--\; ???\; -->$ N $⩽<!--\; ???\; -->$ 48 and Z = 38. The three-term Talmi–Otsuka general Hamiltonian in the framework of the neutron proton version of the Interaction boson model was used to perform the calculations. The yrast levels energy are reproduced. The beta and gamma band energy levels also matched well. The reduced transition probabilities were also calculated and were found to be in agreement with the experimental values. In addition, g-factor for the $2_1^{+}$ state was evaluated. Possible candidates for mixed symmetry states were also predicted for several nuclei in this isotopic chain. (papers)