Multiple choice general knowledge

The phosphate are a group of minerals of one or more metallic elements chemically associated with the Phosphate compound

  1. PO4

  2. PO2

  3. PH4

  4. PO3

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A Correct answer
Explanation

The phosphate ion has the chemical formula PO4³⁻, consisting of one phosphorus atom bonded to four oxygen atoms. Options PO2, PH4, and PO3 are incorrect formulas. Phosphate minerals contain this PO4 unit bonded to metal cations.