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JEE Main20249 Apr 2024Morning ShiftChemistryCoordination CompoundsActual

The ( 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

  1. A( [3 ( Ca ₃ ( PO ₄ )₂ ) Ca ( OH )₂ ] )
  2. B( [3 ( Ca ₃ ( PO ₄ )₃ ) CaF ₂ ] )
  3. C( [3 ( Ca ₂ ( PO ₄ )₂ ) Ca ( OH )₂ ] )
  4. D( [3 ( Ca ₃ ( PO ₄ )₂ ) CaF ₂ ] )

Correct answer

D. ( [3 ( Ca ₃ ( PO ₄ )₂ ) CaF ₂ ] )

Step-by-step solution

Fluoroapatite [3 Ca ₃ ( PO ₄ )₂ CaF ₂ ]

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