翻訳と辞書 Words near each other ・ Isotopes of livermorium ・ Isotopes of lutetium ・ Isotopes of magnesium ・ Isotopes of manganese ・ Isotopes of meitnerium ・ Isotopes of mendelevium ・ Isotopes of mercury ・ Isotopes of molybdenum ・ Isotopes of neodymium ・ Isotopes of neon ・ Isotopes of neptunium ・ Isotopes of nickel ・ Isotopes of niobium ・ Isotopes of nitrogen ・ Isotopes of nobelium ・ Isotopes of osmium ・ Isotopes of oxygen ・ Isotopes of palladium ・ Isotopes of phosphorus ・ Isotopes of platinum ・ Isotopes of plutonium ・ Isotopes of polonium ・ Isotopes of potassium ・ Isotopes of praseodymium ・ Isotopes of promethium ・ Isotopes of protactinium ・ Isotopes of radium ・ Isotopes of radon ・ Isotopes of rhenium ・ Isotopes of rhodium Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Isotopes of osmium ： ウィキペディア英語版 Isotopes of osmium Osmium (Os) has seven naturally occurring isotopes, 6 of which are stable: 184Os, 187Os, 188Os, 189Os, 190Os, and (most abundant) 192Os. The other natural isotope, 186Os, has an extremely long half-life (2×1015 years) and for practical purposes can be considered to be stable as well. 187Os is the daughter of 187Re (half-life 4.56×1010 years) and is most often measured in an 187Os/188Os ratio. This ratio, as well as the 187Re/188Os ratio, have been used extensively in dating terrestrial as well as meteoric rocks. It has also been used to measure the intensity of continental weathering over geologic time and to fix minimum ages for stabilization of the mantle roots of continental cratons. However, the most notable application of Os in dating has been in conjunction with iridium, to analyze the layer of shocked quartz along the Cretaceous–Paleogene boundary that marks the extinction of the dinosaurs 66 million years ago. There are also 30 artificial radioisotopes, the longest-lived of which is 194Os with a half-life of 6 years, all others have half-lives under 94 days. There are also 9 known nuclear isomers, the longest-lived of which is 191mOs with a half-life of 13.10 hours. Standard atomic mass: 190.23(3) u. == Table == 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Isotopes of osmium」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.