What is the oxidation number of $\mathrm{Pt}$ in $\mathrm{PtCl}_6^{2-}$ ?

What is the oxidation number of $\mathrm{Pt}$ in $\mathrm{PtCl}_6^{2-}$ ?
  1. +6
  2. +4
  3. -6
  4. -4

Solution

$\begin{array}{ll} & \mathrm{PtCl}_6^{2-}: \\ & x+(-1 \times 6)=-2 \\ \therefore \quad & x=+4\end{array}$

Asked in: MHT CET 2023 (14 May Shift 2)

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