The \(\mathrm{F}^{-}\)ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on…

The \(\mathrm{F}^{-}\)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.
  1. \(\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{Ca}(\mathrm{OH})_2\right]\)
  2. \(\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_3\right) \cdot \mathrm{CaF}_2\right]\)
  3. \(\left[3\left(\mathrm{Ca}_2\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{Ca}(\mathrm{OH})_2\right]\)
  4. \(\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{CaF}_2\right]\)

Solution

Fluoroapatite $\Rightarrow\left[3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{CaF}_2\right]$

Asked in: JEE Main 2024 (09 Apr Shift 1)

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