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lutetium
[ loo-tee-shee-uhm ]
noun
- a trivalent rare-earth element. : Lu; : 174.97; : 71.
lutetium
/ ±ôʊˈ³Ù¾±Ëʃɪə³¾ /
noun
- a silvery-white metallic element of the lanthanide series, occurring in monazite and used as a catalyst in cracking, alkylation, and polymerization. Symbol: Lu; atomic no: 71; atomic wt: 174.967; valency: 3; relative density: 9.841; melting pt: 1663°C; boiling pt: 3402°C
lutetium
/ ±ô´ÇÌ…´ÇÌ…-³Ùŧ′²õ³óŧ-É™³¾ /
- A silvery-white metallic element of the lanthanide series that is used in nuclear technology. Its radioactive isotope is used in determining the age of meteorites. Atomic number 71; atomic weight 174.97; melting point 1,663°C; boiling point 3,395°C; specific gravity 9.840 (at 25°C); valence 3.
- See Periodic Table
˜yÐÄvlog History and Origins
˜yÐÄvlog History and Origins
Origin of lutetium1
Example Sentences
Most rare earth elements are lanthanides, elements from 57 -- lanthanum -- to 71 -- lutetium -- on the periodic table.
For instance, the material described in the paper was supposed to have around three hydrogen atoms for every lutetium atom.
The 17 elements are: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium.
Dr. Dias’s material is made of lutetium, a silvery-white rare earth metal, along with hydrogen and a little bit of nitrogen.
Salamat has used imaging methods that reveal where the heavy lutetium atoms are within the compound, but the team isn’t yet certain about the configuration of the lighter hydrogen and nitrogen atoms.
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