A) +4
B) +8
C) +10
D) +18
Correct Answer: B
Solution :
Let the oxidation number of Os in \[\text{Os}{{\text{O}}_{\text{4}}}\]be X. \[X+(-2)\times 4=0\] \[X-8=0\] \[X=8.\] Hence, the correct option is [b].You need to login to perform this action.
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