The main source of fluorine is the mineral

Options

A. `Na_(2)AIF_(6)`
B. `CaF_(2).3Ca_(3)(PO_(4))_(2)`
C. `CaF_(2)`
D. `NaF`

Answer

3

Explanation

Halogens are very reactive elements and hence do not occur in the free elemental state in nature. They are found mainly in the form of metal halides although iodine also occurs as iodate `(IO_(3)^(-))`.
The most important naturally occuring compound of fluorine is fluorspar (calcium fluoride), `Ca^(+)(F^(-))_(2)`.
Other well known `F` containing minerals are fluora aptite `[3Ca_(3)(PO_(4))_(2).CaF_(2)]` and cryloite ,`(Na^(+))_(3)AlF_(6)^(3-)`,which is importance in the extraction of `Al`.