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MnF(7) is not stable while Mn(2)O(7) is ...

`MnF_(7)` is not stable while `Mn_(2)O_(7)` is stable.

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`MnF_(7)` is unstable due to more crowd of F which lead to increase in repulsion
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Incorrect statement about Mn_(2)O_(7) is :

Mn_2O_7 is a basic oxide.

Assertion : The highest manganese fluroide is MnF_(4) and the highest oxide is Mn_(2) O_(7) . Reason : In Mn_(2) O_(7) , each Mn is tetrahedrally surrounded by O's including Mn-O-Mn bridge.

2Mn_(2)O_(7)rarr4MnO_(2)+3O_(2) ( if M is m ol.wt. of Mn_(2)O_(7) ). Find the equivalent weight of Mn_(2)O_(7) in above change.

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