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Question: Answered & Verified by Expert
In dimer of phosphorus pentoxide, in what order number of $\mathrm{P}-\mathrm{P}, \mathrm{P}=\mathrm{O}$ and $\mathrm{P}-\mathrm{O}-\mathrm{P}$ bonds are there?
Chemistryp Block Elements (Group 15, 16, 17 & 18)AIIMSAIIMS 2019 (26 May)
Options:
  • A $\mathrm{P}-\mathrm{O}-\mathrm{P}>\mathrm{P}=\mathrm{O}>\mathrm{P}-\mathrm{P}$
  • B $\mathrm{P}=\mathrm{O}>\mathrm{P}-\mathrm{O}-\mathrm{P}>\mathrm{P}-\mathrm{P}$
  • C $\mathrm{P}-\mathrm{O}-\mathrm{P}>\mathrm{P}-\mathrm{P}>\mathrm{P}=\mathrm{O}$
  • D $\mathrm{P}=\mathrm{O}>\mathrm{P}-\mathrm{P}>\mathrm{P}-\mathrm{O}-\mathrm{P}$
Solution:
2287 Upvotes Verified Answer
The correct answer is: $\mathrm{P}-\mathrm{O}-\mathrm{P}>\mathrm{P}=\mathrm{O}>\mathrm{P}-\mathrm{P}$


Total $\mathrm{P}-\mathrm{O}-\mathrm{P}$ bond $\mathrm{s}=6$
Total $\mathrm{P}=\mathrm{O}$ bond $=4$
Total $\mathrm{P}-\mathrm{P}$ bonds $=0$

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