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ShareCalcium is a chemical element in the periodic table that has the symbol Ca and atomic number 20.
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Calcium is a soft grey alkaline earth metal that is used as a reducing agent in the extraction of thorium, zirconium and uranium.
Calcium is also the fifth most abundant element in the earth's crust.
It is essential for living organisms, particularly in cell physiology, and is the most common metal in many animals.
For more information about the topic Calcium, read the full article at Wikipedia.org, or see the following related articles:
Argon — Argon is a chemical element in the periodic table. It has the symbol Ar and atomic number 18. The third noble gas, in group 18, argon makes up about ... > read more
Potassium — Potassium is a chemical element in the periodic table. It has the symbol K and atomic number 19. The name "potassium" comes from the word "potash", ... > read more
Indium — Indium is a chemical element in the periodic table that has the symbol In and atomic number 49. This rare, soft, malleable and easily fusible poor ... > read more
Iridium — Iridium is a chemical element in the periodic table that has the symbol Ir and atomic number 77. A dense, very hard, brittle, silvery-white ... > read more
Sodium — Sodium is the chemical element in the periodic table that has the symbol Na and atomic number 11. Sodium is a soft, waxy, silvery reactive metal ... > read more
Lanthanum — Lanthanum is a chemical element in the periodic table that has the symbol La and atomic number ... > read more
Bromine — Bromine is a chemical element in the periodic table that has the symbol Br and atomic number 35. A halogen element, bromine is a red volatile liquid ... > read more
Germanium — Germanium is a chemical element in the periodic table that has the symbol Ge and atomic number 32. This is a lustrous, hard, silver-white, metalloid ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Calcium at Wikipedia.org. See the Wikipedia copyright page for more details.
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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