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- CALCIUM
- Atomic symbol - Ca
- Atomic weight - 40.078
- Atomic number - 20
- Electron configuration - 2-8-8-2
- Oxidation states - +2
- State of matter - solid
- Light metal
- Discovered in 1808 by Sir Humphry Davy
- Boils at 1484 ¯C, melts at 839 ¯C
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- Notes:
- Calcium is just behind aluminum and iron in the list of abundant metals, and
- makes up 3% of the Earth's crust. Calcium Carbonate can be found as limestone,
- marble, chalk seashells, and calcite. It is found as dolomite when combined
- with magnesium. Calcium is a good reducing agent and forms heavy hydroxide
- coats with contact with moist air.
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