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Calcium is the fifth most abundant eleme...

Calcium is the fifth most abundant element (by weight) in the earth's crust. Which of the following is called anhydrite?

A

`CaSO_(4)`

B

`CaSO_(4).2H_(2)O`

C

`CaF_(2)`

D

`3[Ca_(3)(PO_(4))_(2)].CaF_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Calcium mainly occurs as `CaCO_(3)` in the form of limestone marble, and chalk other important mineral of Ca are fluorite or fluorspar `CaF_(2)`, fluorapatite `[3(Ca_(3)(PO_(4))_(2)).CaF_(2)]`, gypsum `CaSO_(4).2H_(2)O`, and anhydrite `CaSO_(4)`.
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