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Print version | Set as Homepage
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General information about Gold |
| Gold |
| Au |
| 79 |
| Transition Metals |
| 11 |
| 6 |
| d |
| metallic yellow |
| 196.966569 g·mol-1 |
1s2 2s2p6 3s2p6d10
4s2p6d10f14 5s2p6d10 6s1 |
| 2, 8, 18, 32, 18, 1 |
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Physical properties of Gold |
| solid |
| 19.3 g·cm-3 |
1337.33(K),
1064.18°C, 1947.52 °F |
| 3129(K),
2856°C, 5173°F |
| ? |
| ? |
| 12.55 kJ·mol-1 |
| 324 kJ·mol-1 |
| 25.418 J·mol-1·K-1 |
| 2.54 (Pauling scale) |
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Atomic structure of Gold |
| 1.79 Å |
| 10.2 cm³/mol |
| 1.34 Å |
| 98.7 |
| Cubic face centered |
| 85 (+3e) 137 (+1e) |
| 5d10 |
| 79 |
| 118 |
| 79 |
| 3, 1 |
| 5d10 6s1 |
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Electron dot
model |
Other languages |
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| Latin: |
Aurum |
| Czech: |
Zlato |
| Croatian: |
Zlato |
| French: |
Or |
| German: |
Gold - s |
| Italian: |
Oro |
| Norwegian: |
Gull |
| Portuguese: |
Ouro |
| Spanish: |
Oro |
| Swedish: |
Guld |
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| Element |
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79 |
2
8
18
32
18
1
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Au |
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196.96656 |
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Brief description |
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The melting point of gold is an assigned value, which serves as a calibration point for the International Temperature Scale and International Practical Temperature Scale. In mass, gold is a yellow-colored metal, although it may be black, ruby, or purple when finely divided. Gold is the most malleable and ductile metal. One ounce of gold can be beaten out to 300 ft2. Gold is a good conductor of electricity and heat. It is not affected by exposure to air or to most reagents. It is inert and a good reflector of infrared radiation. Gold is usually alloyed to increase its strength. Pure gold is measured in troy weight, but when gold is alloyed with other metals the term karat is used to express the amount of gold present.
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Uses of Gold |
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Gold is used in coinage and is the standard for many monetary systems. Gold is used for jewelry, dental work, plating, and reflectors. Chlorauric acid (HAuCl4) is used in photography for toning silver images. Disodium aurothiomalate, administered intramuscularly, is a treatment for arthritis.
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Hystory of Gold |
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- Discoverer:
- Discovery Location:
- Discovery Year: long time ago
- Name Origin: Gold from English word geolo what means yallow as gold is.
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