In pyrophosphoric acid, H_4P_2O_7 ((HO)_2P(=O)-O-P(=O)(OH)_2), the number of and d -p bonds are respectively

JEE Main Chemistry question

In pyrophosphoric acid, (), the number of and bonds are respectively

(A)8 and 2
(B)6 and 2
(C)12 and zero
(D)12 and 2Correct

Answer: (D)

Solution

Each P atom forms 4 σ-bonds (2 to –OH oxygens, 1 to the bridging O, 1 to the terminal =O), giving P–O σ-bonds, plus 4 O–H σ-bonds from the four –OH groups,

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Question ID VK-156068