Why the calcium is found in the form of compound?
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Calcium never found free it found in form of compounds by reacting with oxygen and water. because the mixture of lime and mercuric oxide (CaO) and (HgO)...
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Although calcium is the fifth most abundant element in the earth's crust, it is never found free in nature since it easily forms compounds by reacting with oxygen and water. Metallic calcium was first isolated by Sir Humphry Davy in 1808 through the electrolysis of a mixture of lime (CaO) and mercuric oxide (Hgo)
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