home *** CD-ROM | disk | FTP | other *** search
- RUBIDIUM
- Atomic symbol - Rb
- Atomic weight - 85.4678
- Atomic number - 37
- Electron configuration - 2-8-18-8-1
- Oxidation states - +1
- State of matter - solid
- Light metal
- Discovered in 1861 by Robert Bunsen and Gustav Kirchhoff
- Boils at 688 ¯C, melts at 38.9 ¯C
-
- Notes:
- Rubidium is the second second most reactive metal and has a silvery white
- lustre. It is very soft. It ignites spontaneously in the presence of air and
- reacts violently with water. Rubidium atomic clocks have been made but are not
- quite as precise as cesium ones.
-