| Atomic Number of Rubidium |
37 |
| Atomic Symbol of Rubidium |
Rb |
| Atomic Weight of Rubidium |
85.468 |
| Color of Rubidium |
silvery |
| Density of Rubidium |
1.532 g/cubic centimeter |
| Melting Point of Rubidium |
39 degrees C / 103 degrees F |
| Boiling Point of Rubidium |
688 degrees C / 1270 degrees F |
| Rubidium State At Room Temp |
solid |
| Classification of Rubidium |
metallic - alkali metal |
| Date Rubidium Was Discovered |
1861 |
| Facts on Rubidium |
Rubidium is an alkali metal and a highly reactive element.
Rubidium is very scarce on earth.
Rubidium is the second most electropositive of the stable alkali elements.
Rubidium is easily ionized, so it has been considered for use in ion engines for space vehicles.
Rubidium compounds are sometimes used in fireworks to give them a purple color.
Rubidium is used in photoelectric cells.
Rubidium ignites spontaneously in air.
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