francium
/fran-see-uhm/US // ˈfræn si əm //UK // (ˈfrænsɪəm) //
钫,钙,钙质,钙剂
Definitions
n.名词 noun
- 1
Chemistry.
- : a radioactive element of the alkali metal group. Symbol: Fr; atomic number: 87.
Examples
The last of the original 92 elements to be discovered was element 87, francium.
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