Meaning Of The Word Rubidium
What's the definition of Rubidium? Find Rubidium meanings, definitions and more at the Real Dictionary online.
Rubidium Meaning
| Rubidium Definition |
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What's The Definition Of Rubidium?
rubidium in American English
a soft, silvery-white, metallic chemical element, one of the alkali metals, that ignites spontaneously in air and reacts violently in water: used in photocells and in filaments of vacuum tubes: symbol, Rb; at. no., 37 noun: a silver-white, metallic, active element resembling potassium, used in photoelectric cells and radio vacuum tubes; at. wt.: 85.47; at. no.: 37; sp. gr.: 1.53 at 20°C rubidium in British English noun: a soft highly reactive radioactive element of the alkali metal group; the 16th most abundant element in the earth's crust (310 parts per million), occurring principally in pollucite, carnallite, and lepidolite. It is used in electronic valves, photocells, |
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