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Question: Answered & Verified by Expert
Arrange the following ions in the order of decreasing $\mathrm{X}-\mathrm{O}$ bond length, where $\mathrm{X}$ is the central atom
ChemistryClassification of Elements and Periodicity in PropertiesBITSATBITSAT 2020
Options:
  • A $\mathrm{ClO}_{4}^{-}, \mathrm{SO}_{4}^{2-}, \mathrm{PO}_{4}^{3-}, \mathrm{SiO}_{4}^{-}$
  • B $\mathrm{SiO}_{4}^{4-}, \mathrm{PO}_{4}^{3-}, \mathrm{SO}_{4}^{2-}, \mathrm{ClO}_{4}^{-}$
  • C $\mathrm{SiO}_{4}^{4-}, \mathrm{PO}_{4}^{3-}, \mathrm{ClO}_{4}^{-}, \mathrm{SO}_{4}^{2-}$
  • D $\mathrm{SiO}_{4}^{4-}, \mathrm{SO}_{4}^{2-}, \mathrm{PO}_{4}^{3-}, \mathrm{ClO}_{4}^{-}$
Solution:
1734 Upvotes Verified Answer
The correct answer is: $\mathrm{SiO}_{4}^{4-}, \mathrm{PO}_{4}^{3-}, \mathrm{SO}_{4}^{2-}, \mathrm{ClO}_{4}^{-}$
More will be the electronegativity of $\mathrm{X}$ lesser will be the bond length of $\underline{X}-\mathrm{O}$ bond.

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