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francium

音标['frænsiәm]

francium是什么意思、francium怎么读

francium汉语翻译

n. 钫
【化】钫
【医】钫(87号元素)

francium词型变化

简写符号:Fr

francium英语解释

名词 francium:

a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
同义词：Fr, atomic number 87

francium详细解释

fran.ci.um

n.Symbol Fr （名词）符号 Fr
An extremely unstable radioactive element of the alkali metals, produced artificially from actinum or thorium, having approximately 9 isotopes, the most stable of which is Fr 223 with a half-life of 2 minutes. Atomic number 87; valence .See table at element
钫：从碱金属锕或钍中人工提炼出的一种极不稳定的放射线元素，约有9种同位素，其中最稳定的是半衰期为2分钟的Fr223。原子序数为87；化合价为参见 element

来源：
After France
源自 France