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Fusion of $M n O_{2}$ with KOH in presence of $O_{2}$ produces a salt ‘W’. Alkaline solution of W upon electrolytic oxidation yields another salt ‘X’. The Manganese containing ions present in W and X, respectively are Y and Z. Correct statement(s) about Y & Z is/are

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In both Y and Z, π bonding occurs between p-orbitals of oxygen and d-orbitals of Manganese

Both Y and Z are coloured and have tetrahedral shape

In aqueous acidic solution, ‘Y’ undergoes disproportionation reaction to give Z and $M n O_{2}$

‘Y’ is diamagnetic in nature while ‘Z’ is paramagnetic

answer is A, B, C.

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Detailed Solution

$\underset{(Y)}{M n O_{4}^{- 2}}$ is paramagnetic with one unpaired electron whereas $\underset{(Z)}{M n O_{4}^{- 2}}$ is diamagnetic with no unpaired electron

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