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Redox Reactions — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions1 Mark
MCQ
The oxidation state of phosphorus is maximum in_________.
  • A
    Phospine (PH3​).
  • B
    Diphosphine (P2​H4​).
  • C
    Metaphosphoric acid (HPO3​).
  • D
    Phosphorus acid (H3​PO3​).
✓

Answer

  1.  Metaphosphoric acid (HPO3​).

Explanation:

The oxidation states of phosphorus in phosphine, diphosphine, metaphosphoric acid and phosphorus acid are −3, −2, +5 and +3 respectively. Hence, it is maximum in metaphosphoric acid. 

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