Question

Oxidation numbers of P in $PO_4^{ 3 - }$, of $S$ in $SO_4^{2 - }$ and that of $Cr$ in $Cr_2 O_7^{ 2 - }$ respectively are

• A. #ERROR!
• B. #ERROR!
• C. #ERROR!
• D. -3, +6 and +6 17 18 19

Answer 1

Answer: (A)

#ERROR!

Answer 2

$PO _{4}^{3-}$, oxidation no. of $P \Rightarrow+5$ $SO _{4}^{2-}$, oxidation no. of $S \Rightarrow+6$ $Cr _{2} O _{7}^{2-}$, oxidation no. of $Cr \Rightarrow+6$