Abstract: A fully reIativistic multiconfiguration Dirac-Fock method with Breit and QED corrections is used to caIcuIate the magnetic dipoIe 3p⁶3d²D_5/2-²D_3/2（Z=22~42）transition energy level separations,transition probabilities and oscillator strengths for the K-like ions. In calculation,significant core polarization effects,Breit and OED corrections are considered. The results are in agreement with recent experiments. A substantial part discrepancy disappears in the ²D_5/2-²D_3/2 separations when core excitation channels are taken into account. There are no transition probability and oscillator strength resuIts in the isoelectronic seguence until now.

Key words: highly stripped ions, energy level intervals, transition probabilities, oscillator strengths