Chromium
| Name |
Chromium |
| Symbol |
Cr |
| Atomic Number |
24 |
| Atomic Mass |
51.9961 atomic mass units |
| Number of Protons |
24 |
| Number of Neutrons |
28 |
| Number of Electrons |
24 |
| Melting Point |
1857.0° C |
| Boiling Point |
2672.0° C |
| Density |
7.19 grams per cubic centimeter |
| Normal Phase |
Solid |
| Family |
Transition Metal |
| Period |
4 |
| Cost |
$10 per 100 grams |
| Origin of Name |
From the Greek word chroma, meaning color |
| Date of Discovery |
In 1797 in France |
| Discovered by |
Louis-Nicolas Vauquelin |
| Common Compounds |
|
| Interesting facts |
- It is not found free in nature.
- Chromite is its most important mineral.
- World wide production each year is about 20,000 tons.
- It is primarily found in Turkey, South Africa, Zimbabwe, Russia and the Philippines.
|
| Common Uses |
- Stainless steel
- Plating car parts, tools, and knives
- Camouflage paint
- Stereos
- Video tapes
- Lasers
- Gives rubies and emeralds their color
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