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[(H(2)O)(8)Fe(2)(OH)(2)].(SO(4))(2) Ca...

`[(H_(2)O)_(8)Fe_(2)(OH)_(2)].(SO_(4))_(2)`
Calculate the coordination number of central metal, E.A.N., Primary valencies.
[If the coordination number is 4, EAN is 18, Primary valency = 2 than answer is 4182.]

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The correct Answer is:
6353
Fe-Fe bond is present , C.N. of Fe=6
EAN=26-2+10+1=35,P.V. of 1 `OH^(-), 2SO_(4)^(2-)=3`
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