翻訳と辞書 Words near each other ・ 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 ・ Isotopes of indium ・ Isotopes of iodine ・ Isotopes of iridium ・ Isotopes of iron ・ Isotopes of krypton ・ Isotopes of lanthanum ・ Isotopes of lawrencium ・ Isotopes of lead ・ Isotopes of lithium ・ 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 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 lanthanum ： ウィキペディア英語版 Isotopes of lanthanum Naturally occurring lanthanum (La) is composed of one stable (139La) and one radioactive (138La) isotope, with the stable isotope, 139La, being the most abundant (99.91% natural abundance). There are 38 radioisotopes that have been characterized, with the most stable being 138La, with a half-life of 102×109 years; 137La, with a half-life of 60,000 years and 140La, with a half-life of 1.6781 days. The remaining radioactive isotopes have half-lives that are less than a day and the majority of these have half-lives that are less than 1 minute. This element also has 12 nuclear isomers, the longest-lived of which is 132mLa, with a half-life of 24.3 minutes. The isotopes of lanthanum range in atomic weight from 116.95 u (117La) to 154.96 u (155La). Standard atomic mass: 138.90547(7) 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 lanthanum」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.