Lanthanide



[lan-thuh-nahyd, -nid] /ˈlæn θəˌnaɪd, -nɪd/

noun, Chemistry.
1.
any element of the lanthanide series.
/ˈlænθəˌnaɪd/
noun
1.
any element of the lanthanide series Also called rare earth, rare-earth element

lanthanide lan·tha·nide (lān’thə-nīd’)
n.
Any of the chemically related elements with atomic numbers 57 through 71. Also called rare earth, rare-earth element.
lanthanide
(lān’thə-nīd’)
Any of a series of 15 naturally occurring metallic elements. The lanthanides include elements having atomic numbers 57 (lanthanum) through 71 (lutetium). They are grouped apart from the rest of the elements in the Periodic Table because they all behave in a similar way in chemical reactions. Also called rare-earth element. See Periodic Table.

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  • Lanthanide-series

    noun, Chemistry. 1. the series of rare-earth elements of atomic numbers 57 through 71 (lanthanum through lutetium). noun 1. a class of 15 chemically related elements with atomic numbers from 57 (lanthanum) to 71 (lutetium)

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    [lan-thuh-nuh m] /ˈlæn θə nəm/ noun, Chemistry. 1. a rare-earth, trivalent, metallic element, allied to aluminum, found in certain minerals, as monazite. Symbol: La; atomic weight: 138.91; atomic number: 57; specific gravity: 6.15 at 20°C. /ˈlænθənəm/ noun 1. a silvery-white ductile metallic element of the lanthanide series, occurring principally in bastnaesite and monazite: used in […]



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