rubidium
pronunciation
How to pronounce rubidium in British English: UK [rʊˈbɪdiəm]
How to pronounce rubidium in American English: US [ruˈbɪdiəm]
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- Noun:
- a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite