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astatine

n. 石厄

石厄

WordNet (r) 3.0 (2006) (WordNet)

astatine
n 1: a highly unstable radioactive element (the heaviest of the
halogen series); a decay product of uranium and thorium
[synonym: {astatine}, {At}, {atomic number 85}]

The Elements Database (element)

astatine
Symbol: At
Atomic number: 85
Atomic weight: (210)
Radioactive halogen element. Occurs naturally from uranium and thorium
decay. At least 20 known isotopes. At-210, the most stable, has a
half-life of 8.3 hours. Synthesized by nuclear bombardment in 1940 by
D.R.
Corson, K.R. MacKenzie and E. Segre at the University of California.

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单词	字典	翻译
astatine	查看　astatine　在百度字典中的解释	百度英翻中〔查看〕
astatine	查看　astatine　在Google字典中的解释	Google英翻中〔查看〕
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