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Q)

Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them ?


( A ) $(n-1)d^3ns^2$
( B ) $(n-1)d^8ns^2$
( C ) $(n-1)d^5ns^{-1}$
( D ) $(n-1)d^5ns^2$

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A)
D Rule= Max no of unpaired en in d and all en in S. So D option shows +7
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