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1. $H P {O_{4}}^{2 -}$

A. $H_{2} P {O_{4}}^{-}$
B. $H_{2} P {O_{4}}^{-}$
C. $H_{2} P {O_{4}}^{-}$
D. $H_{2} P {O_{4}}^{-}$

Answer: Option B

Explanation:

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