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Question: Answered & Verified by Expert
The $\mathrm{P}-\mathrm{O}$ bond order in $\mathrm{PO}_4^{3-}$ is
ChemistryChemical Bonding and Molecular StructureCOMEDKCOMEDK 2022
Options:
  • A 1
  • B 1.5
  • C 1.45
  • D 1.25
Solution:
2069 Upvotes Verified Answer
The correct answer is: 1.25
The structure of $\mathrm{PO}_4^{3-}$ is


$$
\begin{aligned}
\text { Bond order } & =\frac{\text { Number of bonds }}{\text { Number of resonating structure }} \\
& =\frac{5}{4}=1.25
\end{aligned}
$$

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