| 单词 | lutetium |
| 释义 | Word Frequency lutetium or lutecium (lʊˈtiːʃɪəm) 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 Word origin C19: New Latin, from Latin Lūtētia ancient name of Paris, home of G. Urbain (1872–1938), French chemist, who discoveredit |
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