Chemistry · 2009
NEET 2009 · Prelims · Code A · Q52
Oxidation numbers of P in PO_4^3-, of S in SO_4^2- and that of Cr in Cr_2 O_7^2- are respectively:
Oxidation numbers of P in $\displaystyle \mathrm{PO}_4^{3-}$, of S in $\displaystyle \mathrm{SO}_4^{2-}$ and that of Cr in $\displaystyle \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ are respectively :
Official answer
(2)
+$\displaystyle 5$, +$\displaystyle 6$ and +$\displaystyle 6$
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NEET (UG) 2009 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.