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varsha valli g. (804)

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1)here Cr has +3 oxdn state.this acc to its config. it has 3 unpaired electrons.thus magnetic moment=1.1*n    where n=no.of unpaired electrons.thus M.M=1.1*3= 3.3approx.
 
2) here Fe is in +4 oxdn state.n=4(from config.).thus M.M=1.1*4=4.4approx.
 
hope this helps
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