1.

The compound formed when enamel on the surface of the teeth reacts with Fions

Answer»

`CaF_(2)`
`(--OVERSET(F)overset(|)C-underset(F)underset(|)C-overset(F)overset(|)underset(F)underset(|)C)_(n)`
`3Ca_(3)(PO_(4))_(2).CA(OH)_(2)`
`3Ca(PO_(4))_(2).CaF_(2)`

Answer :D


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