Difference between revisions of "Indium"
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| − | {{Element | name=Indium | symbol=In | anumber=49 | amass=114.818 amu | state=Solid | class=Poor Metals | cstructure=Face-centered tetragonal | color=Silvery-white | date=1863 | discname=Ferdinand Reich and Hieronymous Richter | origname=From the indigo blue it shows in a spectroscope. | uses=Used as a coating for high speed bearings, in mirrors, solar cells, nuclear power regulators, photo cells, thermistors, and transistors. Also employed in low-melting alloys for safety devices. | obtained=Found in some zinc ores, but is primarily produced as a by-product of lead and zinc smelting. }} | + | {{Element | name=Indium | symbol=In | anumber=49 | amass=114.818 amu | state=Solid | class=Poor Metals | cstructure=Face-centered tetragonal | color=Silvery-white | date=1863 | discname=Ferdinand Reich and Hieronymous Richter | origname=From the indigo blue it shows in a spectroscope. | uses=Used as a coating for high speed bearings, in high-quality mirrors, solar cells, nuclear power regulators, photo cells, thermistors, and transistors. Also employed in low-melting alloys for safety devices. | obtained=Found in some zinc ores, but is primarily produced as a by-product of lead and zinc smelting. }} |
'''Indium''' is an [[element]] in the "poor metals" class (beyond the transition metals, before the nonmetals) of the [[periodic table of the elements|periodic table]]. It is soft and silvery-white. It is stable in air and water, but dissolves in acids. It has a specific gravity of 7.310. It has two stable isotopes (actually one, but another one has a [[half-life]] of over 10<sup>14</sup> years). | '''Indium''' is an [[element]] in the "poor metals" class (beyond the transition metals, before the nonmetals) of the [[periodic table of the elements|periodic table]]. It is soft and silvery-white. It is stable in air and water, but dissolves in acids. It has a specific gravity of 7.310. It has two stable isotopes (actually one, but another one has a [[half-life]] of over 10<sup>14</sup> years). | ||
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| + | Indium was discovered [[spectroscopically spectroscope]] (many 19th century element discoveries were made this way) while searching for thallium in zinc ores. | ||
[[Category:Elements]] | [[Category:Elements]] | ||
Revision as of 23:59, November 20, 2008
| Indium | |
|---|---|
| Properties | |
| Atomic symbol | In |
| Atomic number | 49 |
| Classification | Poor Metals |
| Atomic mass | 114.818 amu |
| Other Information | |
| Date of discovery | 1863 |
| Name of discoverer | Ferdinand Reich and Hieronymous Richter |
| Name origin | From the indigo blue it shows in a spectroscope. |
| Uses | Used as a coating for high speed bearings, in high-quality mirrors, solar cells, nuclear power regulators, photo cells, thermistors, and transistors. Also employed in low-melting alloys for safety devices. |
| Obtained from | Found in some zinc ores, but is primarily produced as a by-product of lead and zinc smelting. |
Indium is an element in the "poor metals" class (beyond the transition metals, before the nonmetals) of the periodic table. It is soft and silvery-white. It is stable in air and water, but dissolves in acids. It has a specific gravity of 7.310. It has two stable isotopes (actually one, but another one has a half-life of over 1014 years).
Indium was discovered spectroscopically spectroscope (many 19th century element discoveries were made this way) while searching for thallium in zinc ores.