lanthanum
Definition
Lanthanum is a metal that is soft and silvery-white. It is the first element in the lanthanide series of elements, which are also known as rare earth elements. Lanthanum is not found in its pure form in nature, but it is found in combination with other elements in minerals such as monazite and bastnäsite.
How can the word be used?
Magnetism: Lanthanum is used to make permanent magnets that are stronger than traditional magnets.
Different forms of the word
Noun: Lanthanum is a chemical element with the symbol La and atomic number 57. It is a soft, silvery-white metal that is chemically similar to the lanthanide series.
Adjective: Lanthanic is an adjective that describes something that is related to lanthanum. For example, a lanthanic compound is a compound that contains lanthanum.
Verb: To lanthanize is to add lanthanum to something. For example, a lanthanum-doped crystal is a crystal that has been added lanthanum.
Etymology
The word "lanthanum" comes from the Greek word λανθανειν (lanthanein), which means "to lie hidden". This is because lanthanum was first discovered in 1839 by Carl Gustav Mosander, who found it hidden in a mineral called cerite.
The name "lanthanum" was chosen because it was thought to be a fitting name for an element that was so difficult to find. The Greek word "λανθανειν" also has the meaning of "invisible" or "hidden", which is another way of describing lanthanum.
Question
What is lanthanum used for?