MCQ
The maximum number of lone pairs of electrons on the central atom from the following species is $........$. $ClO _3^{-}, XeF _4, SF _4$ and $I _3^{-}$
- ✓$3$
- B$6$
- C$9$
- D$5$

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[Given $pK _{ a }$ of $CH _{3} COOH =4.57$ ]