Radiative transitions K to L-2, L-3 subshell and M shell were measured using the K X-ray spectrum for 21 elements in the atomic range 41 less than or equal to Z less than or equal to 68. The targets were irradiated with T photons at 59.5 keV from Am-241 radioisotope source. The theoretical values were calculated using the radiative and nonradiative transition rates of these elements. It was observed that present values agree with previous theoretical results. (C) 2002 Elsevier Science Ltd. All rights reserved.