Difference between revisions of "Rubidium"
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Rb; rubidio (It., Port., Esp.) | Rb; rubidio (It., Port., Esp.) | ||
| − | == | + | == Risks == |
| − | + | * Ignites spontaneously in air. | |
| + | * Reacts vigorously with halogens and mercury. | ||
| + | * Metal can burn skin on contact. | ||
| + | * EChemi: [https://www.echemi.com/sds/rubidium-pid_Rock21044.html SDS] | ||
| + | |||
| + | ==Physical and Chemical Properties== | ||
| + | * Soluble in acids and ethanol. Decomposes in water. | ||
| + | * Flame color is dark red to violet. | ||
{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 39 | + | | 39 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.532 | + | | 1.532 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 29: | Line 36: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 688 | + | | 688 C |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | + | * Web Elements: [http://www.webelements.com/webelements/elements/text/Rb/key.html Website]; gives discovery as 1861 | |
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| − | Web Elements: [http://www.webelements.com/webelements/elements/text/Rb/key.html Website] | ||
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 682 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 682 | ||
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8439: discovered 1861 | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8439: discovered 1861 | ||
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[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 08:52, 28 June 2022
Description
A silvery-white, very reactive, metallic element. Rubidium occurs in concentrations of about 34 ppm in the earth's crust. It is found throughout the world in alkali metal minerals such as rhodizite, lepidolite, and carnallite. It is also present in sea water and mineral springs. Rubidium was discovered by Robert Bunsen and Gustav Kirchhoff in 1861. It is a soft metal with a silvery white color that tarnishes quickly. Rubidium is used in photoelectric cells and as a catalyst.
Synonyms and Related Terms
Rb; rubidio (It., Port., Esp.)
Risks
- Ignites spontaneously in air.
- Reacts vigorously with halogens and mercury.
- Metal can burn skin on contact.
- EChemi: SDS
Physical and Chemical Properties
- Soluble in acids and ethanol. Decomposes in water.
- Flame color is dark red to violet.
| Composition | Rb (atomic no. 37) |
|---|---|
| CAS | 7740-17-7 |
| Melting Point | 39 C |
| Density | 1.532 g/ml |
| Molecular Weight | atomic wt = 84.4678 |
| Boiling Point | 688 C |
Resources and Citations
- Web Elements: Website; gives discovery as 1861
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 682
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 Comment: discovered 1860
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8439: discovered 1861