314KbUse this Persistent URL to link to this item: <a href="http://resolver.caltech.edu/CaltechAUTHORS:WINpnas29AbstractIt">http://resolver.caltech.edu/CaltechAUTHORS:WINpnas29AbstractIt</a> has been shown by Lindh [1] and others [2] that the shift in the K absorption edges for various compounds of sulfur, chlorine, phosphorous, iron, and some other substances, depends chiefly on the valence of the element in a given compound.