law·ren·ci·um /lɔˈrɛn(t)siəm/
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law·ren·ci·um /lɔˈrɛn(t)sɪəm/ 名詞
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lawrencium
n : a radioactive transuranic element synthesized from
californium [syn: Lw, atomic number 103]
lawrencium
Symbol: Lr
Atomic number: 103
Atomic weight: (262)
Appearance unknown, however it is most likely silvery-white or grey
and metallic. Lawrencium is a synthetic rare-earth metal. There are
eight known radioisotopes, the most stable being Lr-262 with a half-life
of 3.6 hours. Due to the short half-life of lawrencium, and its
radioactivity, there are no known uses for it. Identified by Albert Ghiorso
in 1961 at Berkeley. It was produced by bombarding californium with boron
ions. The name is temporary IUPAC nomenclature, the origin of the name
comes from Ernest O. Lawrence, the inventor of the cyclotron. If sufficient
amounts of lawrencium were produced, it would pose a radiation hazard.