JEE MAIN - Chemistry (2021 - 27th August Evening Shift - No. 9)
Potassium permanganate on heating at 513 K gives a product which is :
paramagnetic and colourless
diamagnetic and green
diamagnetic and colourless
paramagnetic and green
Explanation
$$2KMn{O_4}\mathrel{\mathop{\kern0pt\longrightarrow}
\limits_{200^\circ C}^\Delta } \mathop {{K_2}Mn{O_4}}\limits_{Green} + \mathop {Mn{O_2}}\limits_{Black} + {O_2}$$
In K2MnO4, manganese oxidation state is +6 and hence it has one unpaired e$$-$$.
In K2MnO4, manganese oxidation state is +6 and hence it has one unpaired e$$-$$.
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