ChemistryEasy39×since 2002Q248The F−\mathrm{F}^{-}F− ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the surface of teeth) into much harder fluoroapatite having the formula.A[3(Ca3(PO4)2)⋅CaF2]\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{CaF}_2\right][3(Ca3(PO4)2)⋅CaF2]B[3(Ca3(PO4)2)⋅Ca(OH)2]\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{Ca}(\mathrm{OH})_2\right][3(Ca3(PO4)2)⋅Ca(OH)2]C[3(Ca3(PO4)3)⋅CaF2]\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_3\right) \cdot \mathrm{CaF}_2\right][3(Ca3(PO4)3)⋅CaF2]D[3(Ca2(PO4)2)⋅Ca(OH)2]\left[3\left(\mathrm{Ca}_2\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{Ca}(\mathrm{OH})_2\right][3(Ca2(PO4)2)⋅Ca(OH)2]Check answerSkip