Lanthanum iodide From Wikipedia the free encyclopedia Lanthanum iodide may refer to: Lanthanum diiodide, LaI2 Lanthanum(III) iodide (lanthanum triiodide), LaI3 Index of chemical compounds with the same nameThis set index article lists chemical compounds articles associated with the same name.If an internal link led you here, you may wish to change the link to point directly to the intended article.