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protactinium
protactinio
Last Update: 2014-12-09
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protactinium [chemical/ingredient]
protactinio
Last Update: 2014-12-09
Usage Frequency: 1
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in 1900 william crookes isolated protactinium as a radioactive material from uranium which he could not identify.
en 1900, william crookes aisló el protactinio como un material radiactivo procedente del uranio que no pudo identificar.
Last Update: 2016-03-03
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greek'protos' for'ancester '. protactinium is before actinium in the periodic table.
del griego « protos », que significa « primero », y del elemento « actinio », que juntos significan « padre del actinio ».
Last Update: 2011-10-23
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== thorium, uranium and protactinium ==the existence of an element between thorium and uranium was predicted by mendeleev in 1871.
== predicciones de 1871 ==la existencia de un elemento entre el torio y el uranio fue predicha por mendeléyev en 1871.
Last Update: 2016-03-03
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protactinium also has two nuclear isomers, 217mpa (half-life 1.2 milliseconds) and 234mpa (half-life 1.17 minutes).
este elemento también tiene dos metaestados, 217mpa (vida media de 1,15 milisegundos) y 234mpa (vida media de 1,17 minutos).
Last Update: 2016-03-03
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