Element: francium |
Name : francium |
Symbol : Fr |
Atomicnumber : 87 |
Relativeatomicmass : [ 223 ] (longest lived isotope) |
Standardstate : solid at 298 K |
Appearance : metallic |
Classification : Metallic |
Groupinperiodictable : 1 |
Groupname : Alkali metal |
Periodinperiodictable : 7 |
Blockinperiodictable : s |
Shellstructure : 2.8.18.32.18.8.1 |
CASRegistry : 7440-73-5 |
Description : Francium occurs as a result of α disintegration of actinium. Francium is found in uranium minerals, and can be made artificially by bombarding thorium with protons |