Dictionary » F » Francium

Francium

Francium

(Science: chemical) francium. a radioactive alkali metal with the atomic symbol fr, atomic number 87, and atomic weight 223. The mass numbers of other known isotopes are 204-213, 217-222, and 224. Its valence is _1.

chemical name: francium


Please contribute to this project, if you have more information about this term feel free to edit this page



This page was last modified 16:33, 10 April 2007. This page has been accessed 1,591 times. 
What links here | Related changes | Permanent link