KnowraLanthanumLinked fromLinked fromThe 10 pages that link to Lanthanum, each with the reason it gives.All 10Broader topic 5Compared with 5LanthanideBroader topic: Its placement illustrates differing conventions about whether the series begins with lanthanum or cerium.Lanthanide contractionBroader topic: It marks the starting end of the series over which radii generally decrease.Carl Gustaf MosanderBroader topic: Mosander identified it in 1839 after separating it from cerium compounds.MischmetalBroader topic: It is a common major constituent, accompanying cerium in commercial mischmetal.Group 3 elementBroader topic: Alternative tables place it in Group 3 rather than lutetium.