A) +6
B) 3
C) +3
D) -6
Correct Answer: C
Solution :
\[{{K}_{3}}[Co{{(N{{O}_{2}})}_{6}}]\xrightarrow{{}}\] or \[3{{K}^{+}}+{{[Co{{(N{{O}_{2}})}_{6}}]}^{3-}}\] Now, \[{{[Co{{(N{{O}_{2}})}_{6}}]}^{3-}}\] \[\because \]In \[\text{NO}_{2}^{-},\]oxidation state of \[\text{NO}_{2}^{-}=-1\] \[x+(-1\times 6)=-3\] \[x-6=-3\] \[x=+6-3=+3\]You need to login to perform this action.
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