Which combination is odd with respect to oxidation numbers of S, Cr, N and H respectively:\

(a) H2SO5, H2S2O8, H2SO4, SF6

(b) K2Cr2O7, K2CrO4, CrO5, CrO2Cl2

(c) NH3 , NH4, N3H, NO2-   

(d) CaH2 , NaH , LiH, MgH2

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#1 | Oxidation Number

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Introduction to Redox
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