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P Block Elements question

2010 · Q110
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P Block Elements question

2010 · Q110

NEETChemistryP Block ElementsMCQ+4 / −1
Oxidation states of P in H4P2O5, H4P2O6, H4P2O7 are respectively
  1. A
    +3, +5, +4
  2. B
    +5, +3, +4
  3. C
    +5, +4, +3
  4. D
    +3, +4, +5
View written solutionFree

Correct answer: D

The oxidation state can be calculated as :

H4P2O5 : +4 + 2x + 5(– 2) = 0 ⇒\Rightarrow⇒ 2x – 6 = 0 ⇒\Rightarrow⇒ x = +3

H4P2O6 : +4 + 2x + 6(– 2) = 0 ⇒\Rightarrow⇒ 2x – 8 = 0 ⇒\Rightarrow⇒ x = +4

H4P2O7 : +4 + 2x + 7(– 2) = 0 ⇒\Rightarrow⇒ 2x – 10 = 0 ⇒\Rightarrow⇒ 2x = 10 ⇒\Rightarrow⇒ x = +5

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