What is Lanthanum?
[[File:Lanthan 1.jpg|thumb|Lanthanum in a glass tube.]] '''Lanthanum''' is a [[chemical element]]. It has the chemical symbol '''La'''. It has the [[atomic number]] 57. It is part of a group of chemical elements in the periodic table named the [[Lanthanide]]s. It is a [[rare earth element]]. It is silvery white, [[malleable]] and [[wikt:ductile|ductile]]. It is soft and can be cut with a knife. {{chem-stub}} {{Periodic Table}} {{authority control}} [[Category:Lanthanides]]