翻訳と辞書 Words near each other ・ Isotopes of caesium ・ Isotopes of calcium ・ Isotopes of californium ・ Isotopes of carbon ・ Isotopes of cerium ・ Isotopes of chlorine ・ Isotopes of chromium ・ Isotopes of cobalt ・ Isotopes of copernicium ・ Isotopes of copper ・ Isotopes of curium ・ Isotopes of darmstadtium ・ Isotopes of dubnium ・ Isotopes of dysprosium ・ Isotopes of einsteinium ・ Isotopes of erbium ・ Isotopes of europium ・ Isotopes of fermium ・ Isotopes of flerovium ・ Isotopes of fluorine ・ Isotopes of francium ・ Isotopes of gadolinium ・ Isotopes of gallium ・ Isotopes of germanium ・ Isotopes of gold ・ Isotopes of hafnium ・ Isotopes of hassium ・ Isotopes of helium ・ Isotopes of holmium ・ Isotopes of hydrogen 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 erbium ： ウィキペディア英語版 Isotopes of erbium Naturally occurring erbium (Er) is composed of 6 stable isotopes, 162Er, 164Er, 166Er, 167Er, 168Er, and 170Er with 166Er being the most abundant (33.503% natural abundance). Thirty radioisotopes have been characterized with between 74 and 108 neutrons, or 142 to 177 nucleons, with the most stable being 169Er with a half-life of 9.4 days, 172Er with a half-life of 49.3 hours, 160Er with a half-life of 28.58 hours, 165Er with a half-life of 10.36 hours, and 171Er with a half-life of 7.516 hours. All of the remaining radioactive isotopes have half-lives that are less than 3.5 hours, and the majority of these have half-lives that are less than 4 minutes. This element also has 13 meta states, with the most stable being 167mEr (t1/2 2.269 seconds). The isotopes of erbium range in atomic weight from 141.9723 u (142Er) to 176.9541 u (177Er). The primary decay mode before the most abundant stable isotope, 166Er, is electron capture, and the primary mode after is beta decay. The primary decay products before 166Er are holmium isotopes, and the primary products after are thulium isotopes. Standard atomic mass: 167.259(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 erbium」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.