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P BLOCK ELEMENTS
Question #37640
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Question
Which of the following is NOT an oxoacid of phosphorus mentioned in the text?
A. Orthophosphoric acid (H₃PO₄)
B. Pyrophosphoric acid (H₄P₂O₇)
C. Phosphine (PH₃)
D. Hypophosphorous acid (H₃PO₂)
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