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  4. In which of the following oxidation state of phosphorous is +3?

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Q. In which of the following oxidation state of phosphorous is +3?

JIPMERJIPMER 2019The p-Block Elements - Part2

Solution:


Orthophosphoric acid $H_{3}P^{+5}O_{4}$
Pyrophosphoric acid $H_{4}P^{+5}_{2}O_{7}$
Orthophosphorous acid $H_{3}P^{+3}O_{3}$
Metaphosphoric acid $HP^{+5}O_{3}$
Thus, orthophosphoric acid has +3 oxidation state