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francium

/ˈfræn.si.əm/

翻译: 一种高放射性的化学元素,属于碱金属,是锕衰变后产生的元素。

1 个条目

noun

C2formalcommonscientific/ˈfræn.si.əm/

不可数

A noun referring to a highly radioactive chemical element belonging to the alkali-metal group, first identified as a decay product of actinium.

  • 🇨🇳一种高放射性的化学元素,属于碱金属,是锕衰变后产生的元素。
  1. Chemical element C2 formal scientific

    A highly radioactive alkali metal element, discovered as a decay product of actinium, with the symbol Fr and atomic number 87.

    • Francium is one of the rarest elements in the Earth's crust.
    • Scientists study francium to understand atomic structure better.
    • Due to its extreme radioactivity, francium has no commercial applications.

    🇨🇳化学元素

  • franciums plural form
  • franciums' possessive plural form
  • francium's possessive singular form