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Redox Reactions — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions2 Marks
Question
Assign oxidation number to the underlined elements in the following species:$\text{K}_2\text{Mn}\text{O}_4$
✓

Answer

$\begin{matrix} +1&\text{x}&-2\\\text{K}_2&\text{ Mn}&\ \text{ O}_4\end{matrix}$Then, we have
2(+1) + x + 4(-2) = 0
⇒ 2 + x - 8 = 0
⇒ x = +6
Hence, the oxidation number of Mn is +6.

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