Entity: LANTHANUM
Lanthanum is a white soft malleable metallic element that occurs in rare-earth minerals. It was first discovered in 1839 by the Swedish chemist Carl Gustaf Mosander.
LANTHANUM
Etymology
Lanthanum derives its name from the ancient Greek word 'lanthanein', meaning 'to lie hidden'.
Definition
Lanthanum is a rare-earth, trivalent, metallic element that is allied to aluminum and is found in certain minerals, such as monazite.
Historical Context
Discovered in 1839 by Carl Gustaf Mosander, lanthanum is classified as a rare-earth element and is the 28th element in the periodic table.
Cultural Significance
Lanthanum plays a crucial role in various industries, including electronics, optics, and energy production.
Related Concepts
Lanthanum is part of the lanthanide series and is closely related to other rare-earth elements.
See Also
A rare-earth, trivalent, metallic element, allied to aluminum, found in certain minerals, as monazite.