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Which of the following oxidation numbers is not correctly matched ?A. `HClO_(4)`B. N in `[Ni(CN)_(6)]^(4-)=+2`C. P in `Mg_(2)P_(2)O_(7)=+6`D. Cr in `(NH_(4))_(2)Cr_(2)O_(7)=+6` |
Answer» Correct Answer - C `Mg_(2)P_(2)O_(7)=+5` `2(+2)+2x-14=0` `2x=10 rArr x= +5` |
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