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The number of P – O – P bonds in H 4 P 2 O 7 , (HPO 3 ) 3 and P 4 O 10 are respectively

1. 0, 3, 6
2. 0, 3, 4
3. 1, 2, 4
4. 1, 3, 6

Correct answer: 1, 3, 6

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