Rubidium

Discovered

1861

Density

1.5 g/cm³

Melts

39 °C

103 °F
312 °K

Boils

688 °C

1270 °F
961 °K

Show sources

University of Colorado Boulder

Harper College

PubChem (NIH.gov)

Contributed by collector no. 3

The Alkali Metals group: Lithium rod, Sodium , Potassium , Rubidium , and Caesium . All samples are inside ampoules, because these elements are extremely reactive to the Oxygen in air.

Contributed by collector no. 3

1 gram of Rubidium in an ampoule

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