Energy levels in Ag-like (4d104f, 4d105ℓ (ℓ = 0–3)), Pd-like (4d94f [J = 1], 4d95p [J = 1], 4d95f [J = 1]), and Rh-like (4d9 [J = 5/2, 3/2]) ions with Z ⩽ 86

Relativistic perturbation theory with a model potential is used for the calculation of energy levels of the states 4f5/2, 4f7/2, 5s1/2, 5p1/2, 5p3/2, 5d3/2, 5d5/2, 5f5/2, and 5f7/2 above the 1s22s22p63s23p63d104s24p64d10 core, with one vacancy 4d5/29, 4d7/29 in the same core, in the silver and rhodium isoelectronic sequences with the maximum nuclear charge Z = 86. The method of extrapolation of the model potential parameter is applied to calculate one-electron and one-vacancy wavefunctions. The wavefunctions of Ag- and Rh-like ions were used to calculate the energies of resonance transitions to the ground state 1S0 in Pd-like ions. Good agreement between the theoretical and the experimental energies of the resonance transitions in Pd-like ions indicates the reliability of the results obtained.