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francium
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francium
Encyclopedia
理学
放射性元素
释
francium
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天然放射性元素,元素符号Fr,原子序数87,半衰期最长的同位素的质量数223,属周期系ⅠA族,碱金属元素。为纪念发现者M.佩雷[注]的祖国法国(France)而命名。
Astronomy
francium
缩写:Fr。钫
Chemistry
>放射化学与辐射化学>放射性元素化学>释义
francium
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electron-electron interaction
electron emission
electron energy analyzer
electron energy level
electron energy loss near-edge structure
electron energy loss spectrometer
electron energy loss spectrometer, EELS
electron energy loss spectroscopy
electron energy loss spectroscopy (EELS)
electron energy loss spectroscopy, EELS
electron energy loss spectrum
electron energy spectrum
electron energy spectrum analysis
electroneurography
electroneurography, ENOG
electroneutrality
electroneutrality principle
electron event
electron exchange reaction
electron excited state
electron excited X-ray fluorescence spectrometry
electron excited Xray fluorescence spectrometry
electron flare
electron focusing
electron gas
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