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The oxidation states of P in `H_4 P_2 O_5, H_4 P_2 O_6` and `H_2 P_2 O_7` are respectively

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The oxidation states of P in `H_4 P_2 O_5, H_4 P_2 O_6` and `H_2 P_2 O_7` are respectively
A. `+3`,+4,+5
B. `+3`,+5,+4
C. `+5`,+3,+4
D. `+5`,+4,+3
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Correct Answer - A
`H_(4)P_(2)O_(5) (+3) , H_(4)P_(2)O_(6) (+4), H_(4)P_(2)O_(7)(+5)`
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