Periodic Table of the Elements: Francium
Related article: Periodic Table of the Elements (table)Periodic Table of the Elements
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| Atomic Number: | 87 |
| Atomic Symbol: | Fr |
| Franciumfrancium [from France], radioactive chemical element; symbol Fr; at. no. 87; mass no. of most stable isotope 223; m.p. about 27°C; (estimated); b.p. 677°C; (estimated); sp. gr. unknown; valence +1. ..... Click the link for more information. | |
| Atomic Weight: | (223) |
| Electron Configuration: | 2 · 8 · 18 32 · 18 8 · 1 |