What is the stock notation of Manganese dioxide?

What is the stock notation of Manganese dioxide?
  1. $\quad \mathrm{Mn}(\mathrm{I}) \mathrm{O}_2$
  2. $\mathrm{Mn}(\mathrm{II}) \mathrm{O}_2$
  3. $\quad \mathrm{Mn}(\mathrm{III}) \mathrm{O}_2$
  4. $\mathrm{Mn}(\mathrm{IV}) \mathrm{O}_2$

Solution

The oxidation state of $\mathrm{Mn}$ in manganese dioxde $\left(\mathrm{MnO}_2\right)$ is +4 . Hence, the stock notation is $\mathrm{Mn}(\mathrm{IV}) \mathrm{O}_2$.

Asked in: MHT CET 2023 (09 May Shift 2)

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