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STD 12 - p -Block elements - ll — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - p -Block elements - ll4 Marks
MCQ
Phosphorus has the oxidation state of $ +3$  in
  • A
    Orthophosphoric acid
  • ✓
    Phosphorus acid
  • C
    Metaphosphoric acid
  • D
    Pyrophosphoric acid
✓

Answer

Correct option: B.
Phosphorus acid
b
(b) $\mathop {{H_3}P{O_3}\,}\limits^ * $

$3 + x - 2 \times 3 = 0$; $x = 6 - 3 = + 3$.

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