Definition: Rubidium is the name for the element with atomic number 37 and is represented by the symbol Rb.
It is a member of the alkali metal group.
It is a member of the alkali metal group.
Rubidium Definition
By Anne Marie Helmenstine, Ph.D., About.com Guide
This is a sample of pure liquid rubidium metal. The colored rubidium superoxide is visible inside the ampule.
Dnn87, Free Documentation License
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