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TS EAMCET · Chemistry · Environmental Chemistry

What is the formula of the product formed when \(\mathrm{F}^{-}\)reacts with enamel on teeth?

  1. A \(\mathrm{CaSO}_4, \mathrm{CaF}_2\)
  2. B \(3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2, \mathrm{PF}_5\)
  3. C \(\mathrm{Ca}_2 \mathrm{SO}_4 \cdot \mathrm{CaF}_2\)
  4. D \(3\left[\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{CaF}_2\right]\)
Verified Solution

Answer & Solution

Correct Answer

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

Step-by-step Solution

Detailed explanation

Enamel of teeth is \(\mathrm{Ca}_{10}\left(\mathrm{PO}_4\right)_6(\mathrm{OH})_2\), when it reacts with \(\mathrm{F}^{-}\)ions, following reaction will take place.…