JEE Main 20249 AprilMorning Shift
- Exam
- JEE Main
- Year
- 2024
- Date
- 9 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Coordination Compounds
JEE Main 2024 · 9 April · Morning Shift · Chemistry · Coordination Compounds
The (F^ - )ions make the enamel on teeth much harder by converting...
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.
Options
- A(\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{Ca}(\mathrm{OH})_2\right])
- B(\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_3\right) \cdot \mathrm{CaF}_2\right])
- C(\left[3\left(\mathrm{Ca}_2\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{Ca}(\mathrm{OH})_2\right])
- D(\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{CaF}_2\right])
Correct answer
D. (\left[3\left(\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2\right) \cdot \mathrm{CaF}_2\right])
Step-by-step solution
Fluoroapatite $\Rightarrow\left[3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{CaF}_2\right]