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Chemistry
Which of the following oxidation numbers is not correctly matched?
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Q. Which of the following oxidation numbers is not correctly matched?
Redox Reactions
A
$P$ in $NaH_2PO_4 = +5$
19%
B
$Ni$ in $[Ni(CN)_6]^{4-} = +2$
13%
C
$P$ in $Mg_2P_2O_7 = +6$
45%
D
$Cr$ in $(NH_4)_2Cr_2O_7 = +6$
23%
Solution:
$Mg_2P_2O_7 = +5$
$2(+2) + 2x - 14 = 0$
$2x= 10 \Rightarrow x = +5$