PYQ Vault
EbooksTutor

Oxidation number of phosphorus in calcium phosphate

The same question, asked 2 times: 25 Apr 2025 S1, 13 May 2026 S2. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    25 Apr 2025 S1

    92
    What is the oxidation number of phosphorus in calcium phosphate?

    Tap an option to check your answer.

  2. Question 2

    13 May 2026 S2

    14
    What is the oxidation number of phosphorus in Ca3(PO4)2\mathrm{Ca_3(PO_4)_2}?

    Tap an option to check your answer.