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  4. What is the valency of Manganese in K2MnO4 ?

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Q. What is the valency of Manganese in $K_2MnO_4$ ?

Redox Reactions

Solution:

Let the valency of $Mn$ be $x$ in $K_2MnO_4$
$\Rightarrow \, 2 \times (+1) + x + 4 \times (-2) = 0 \Rightarrow \, x = +6$