The number of bonds in , , and are respectively

Question

The number of  bonds in , , and  are respectively

Canvas Classes · Accepted Answer

Counting P–O–P bonds:

(pyrophosphoric acid):
Two  units linked by one P–O–P bridge: 1 P–O–P bond

(trimetaphosphoric acid):
Cyclic trimer with 3 P atoms in a ring, each linked by P–O–P: 3 P–O–P bonds

(phosphorus pentoxide):
Each of the 4 P atoms is linked to 3 bridging O atoms, but each P–O–P bond is shared between 2 P atoms:
- 4 P atoms × 3 bridging O / 2 = 6 bridging P–O–P bonds: 6 P–O–P bonds

Answer: Option (4) — 1, 3, 6

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