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General information about Indium |
| Indium |
| In |
| 49 |
| Poor metals |
| 13 |
| 5 |
| p |
| silvery lustrous gray |
| 114.818(3) g·mol-1 |
1s2 2s2p6 3s2p6d10
4s2p6d10 5s2p1 |
| 2, 8, 18, 18, 3 |
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Physical properties of Indium |
| solid |
| 7.31 g·cm-3 |
| 429.75(K),
156.6°C, 313.88°F |
| 2345(K),
2072°C, 3762 °F |
| ? |
| ? |
| 3.281 kJ·mol-1 |
| 231.8 kJ·mol-1 |
| 26.74 J·mol-1·K-1 |
| 1.78 (Pauling scale) |
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Atomic structure of Indium |
| 2 Å |
| 15.7 cm³/mol |
| 1.44 Å |
| 194 |
| Tetragonal |
| 81 (+3e) |
| 5p1 |
| 49 |
| 66 |
| 49 |
| 3 |
| 5s2p1 |
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Electron dot
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Other languages |
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| Latin: |
Indium |
| Czech: |
Indium |
| Croatian: |
Indij |
| French: |
Indium |
| German: |
Indium - s |
| Italian: |
Indio |
| Norwegian: |
Indium |
| Portuguese: |
Indio |
| Spanish: |
Indio |
| Swedish: |
Indium |
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| Element |
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49 |
2
8
18
18
3 |
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In |
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114.818 |
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Brief description |
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The melting point of indium is 156.61 °C, boiling point is 2080 °C, specific gravity is 7.31 (20 °C), with a valence of 1, 2, or 3. Indium is a very soft, silvery-white metal. The metal has a brilliant luster and emits a high pitched sound when bent. Indium wets glass. Indium may be toxic, but further research is required to assess its effects.
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Uses of Indium |
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Indium is used in low melting point alloys, making bearing alloys, transistors, thermistors, photoconductors, and rectifiers. When plated or evaporated onto glass, it forms a mirror as good as that formed by silver, but with superior resistance to atmospheric corrosion.
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Hystory of Indium |
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- Discoverer: Ferdinand Reich, Theodor Richter
- Discovery Location: Germany
- Discovery Year: 1863
- Name Origin: Latin: indicum. Indium is named for the brilliant indigo line from the spectrum.
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