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More About Lanthanum
What the name means: The word lanthanum derives from the Greek word lanthanein or lanthano, meaning "hidden".
Who identified lanthanum?: Lanthanum was identified by the Swedish scientist, Carl Gustav Mosander, in 1839.
STP = standard temperature and pressure.
About lanthanum: Lanthanum is one of the members of the group of elements know as the rare earths. There are sixteen elements in this group. The word "earth" was used to describe the oxide of metals. The word "rare" was applied to these sixteen elements because it was believed that their metal oxides were not present in any great quantity in the Earth's crust. In fact, for most of the elements in this group, this is not the case. Their metal oxides are quite abundant, although they often occur mixed with other compounds.
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