JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The conversion of hydroxyapatite occurs due to presence of \(\mathrm{F}^{-}\)ions in water. The correct formula of hydroxyapatite is:
- A \(\left[3 \mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2} \cdot \mathrm{Ca}(\mathrm{OH})_{2}\right]\)
- B \(\left[3 \mathrm{Ca}(\mathrm{OH})_{2} \cdot \mathrm{CaF}_{2}\right]\)
- C \(\left[\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2} \cdot \mathrm{CaF}_{2}\right]\)
- D \(\left[3 \mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2} \cdot \mathrm{CaF}_{2}\right]\)
Answer & Solution
Correct Answer
(A) \(\left[3 \mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2} \cdot \mathrm{Ca}(\mathrm{OH})_{2}\right]\)
Step-by-step Solution
Detailed explanation
The \(\mathrm{F}^{\Theta}\) ions make the enamel on teeth much harder by converting hydroxyapatite, \(\left[3\left(\mathrm{Ca}_{3}(\mathrm{PO})_{2}\right] \cdot \mathrm{Ca}(\mathrm{OH})_{2}\right]\) the enamel on the surface of the teeth into much harder fluroappatite.…
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