FRANCIUM

Francium

Francium is a chemical element with symbol Fr and atomic number 87. It was formerly known as eka-caesium and actinium K. It is one of the two least electronegative elements, the other being caesium. Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron.

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francium

Noun

  1. A metallic chemical element (symbol Fr) with an atomic number of 87.


The above text is a snippet from Wiktionary: francium
and as such is available under the Creative Commons Attribution/Share-Alike License.

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