a Oxidation state of Mn in $\mathrm{MnO}_{2}$ is +4 . Find out the oxidation state of Mn in $\mathrm{Mn}_{2} \mathrm{O}_{3}$. (Hint: Oxidation state of oxygen $=-2$ ) b Transition elements show variable oxidation state. Why?

Explanation

The oxidation state of Mn in Mn2O3 can be calculated by considering the oxidation state of oxygen as -2. Since there are two oxygen atoms, the total negative charge is -4. To balance this, the oxidation state of Mn in Mn2O3 is +3. Transition elements show variable oxidation state due to the presence of multiple electrons in their d-orbitals, which can be easily lost or gained.

a Oxidation state of Mn in $\mathrm{MnO}_{2}$ is +4 . Find out the oxidation state of Mn in $\mathrm{Mn}_{2} \mathrm{O}_{3}$. (Hint: Oxidation state of oxygen $=-2$ ) b Transition elements show variable oxidation state. Why?

Explanation

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