Element:U
From Metabolomics.JP
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| + | It was first isolated by Peligot in 1841. Its name comes from Uranus (Greek goddess of astronomy). In ancient Rome, pitchblende was used to stain glass into rich yellow. Its mass is 18.9, almost as heavy as gold (19.3). | ||
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| + | It has 16 radioactive isotopes, and <sup>238</sup>U yeilds [[Element:Pu|plutonium (<sup>239</sup>Pu)]]. | ||
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| + | ウランが最初に単離されたのは1841年、Peligot によります。名前は天文学のギリシャ神Uranusから。古代ローマではウラン鉱をガラスを黄色に染色するのに使いました。質量は18.9あり、金(19.3)に匹敵します。 | ||
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| + | 放射性同位体を16持ち、<sup>238</sup>U は[[Element:Pu|プルトニウム<sup>239</sup>Pu]] を生むので重要。 | ||
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{{Element | {{Element | ||
|Number=92 | |Number=92 | ||
Latest revision as of 06:12, 15 June 2011
It was first isolated by Peligot in 1841. Its name comes from Uranus (Greek goddess of astronomy). In ancient Rome, pitchblende was used to stain glass into rich yellow. Its mass is 18.9, almost as heavy as gold (19.3). It has 16 radioactive isotopes, and 238U yeilds plutonium (239Pu).
[edit] Atomic Number
92
[edit] Atomic Name
Uranium(ウラン)
[edit] Stable Isotopes
| isotope | mass | isotopic abundance (%) |
|---|---|---|
| 234U | 234.0409447 | [0.0054(5)] = (Natural radioactivity isotope) |
| 235U | 235.0439222 | [0.7204(6)] = (Natural radioactivity isotope) |
| 238U | 238.0507835 | [99.2742(10)] = (Natural radioactivity isotope) |
[edit] Radioisotopes
| isotope | half life | disintegration form |
|---|---|---|
| 232U | 68.9 years | alpha |
| 233U | 1.592 x 105 years | alpha, SF |
| 234U | 2.455 x 105 years | alpha, SF |
| 235U | 7.038 x 108 years | alpha, SF |
| 237U | 6.75 days | beta- |
| 238U | 4.468 x 109 years | alpha, SF |
| 239U | 23.45 minuites | beta- |
