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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure1 Mark
MCQ
Among the following ions, the $\text{p}\pi−\text{d}\pi$ overlap could be present in :
  • A
    $\text{NO}_3^−​$
  • ✓
    ​$\text{PO}_4^{3−}$
  • C
    ​$\text{CO}_3^{2−}$
  • D
    ​$\text{NO}_2^−​$
✓

Answer

Correct option: B.
​$\text{PO}_4^{3−}$
In $\text{NO}_3^−​, \text{CO}_3^{2−}, \text{NO}_2^−​$​ only $p−p$ orbitals are involved in bonding.
In $\text{PO}_4^{3−}​, 3d$ orbitals of phosphorus are also involved in bonding.

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