But it is presently impossible to choose between mixed valencies or intermediate valency to represent the electronic state of U.doi:10.1002/zaac.19865400909Guittard, MVovan, TJulien‐Pouzol, MJaulmes, SLaruelle, PFlahaut, JWILEY‐VCH VerlagZeitschrift Für Anorganische Und Allgemeine Chemie...