Chemical effects of L X-rays emitted from iodine and antimony compounds

L X-ray spectra of iodine and antimony compounds were measured using a doublecrystal spectrometer, LΥ4 X-rays emitted from the valence 5p electrons were found to be sensitive to the chemical environment. The LΥ4/Lβ3, LΥ1/LΥ1 and Lβ2,15/Lα1 intensity ratios were remarkably changed in various compounds of these elements. LΥ4 energies of iodine compounds were shifted with the increase of the formal oxidation number.