The oxide that shows magnetic property is

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The oxide that shows magnetic property is

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Mn₃O₄

Na₂O

MgO

SiO₂

answer is A.

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Detailed Solution

The oxide of Mn shown as Manganese(II,III) oxide it is present in two oxidation states +2 and +3 and the formula is written as MnO·Mn₂O₃.In Mn(II) five unpaired electrons are present. 3d^5. Due to which it is highly magnetic in nature. To calculate magnetic moment we use the equation μ=√n (n+2), where n is the number of unpaired electrons. Greater the n value, greater will be the magnetic moment

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