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JEE Main202224 Jun 2022Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which one of the following elemental forms is not present in the enamel of the teeth?

Options

  1. ACa 2 +
  2. BP 3 +
  3. CF -
  4. DP 5 +

Correct answer

B. P 3 +

Step-by-step solution

Calcium phosphate is the major component of hydroxyapatite crystal that form the inorganic portion of the teeth Calcium phosphate is a mineral comprising calcium ion (Ca 2 + ) and phosphate ion P + 5 . It is present in the crown area of the tooth and also in bones. It contain some F - ions too. But it does not contain P + 3 ions.

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