Redox Reactions And Electrochemistry Ques 441
Question: The oxidation number of $ Mn $ in $ NO_2 $ is [CPMT 1982, 83; EAMCET 1992, 93; RPET 1999]
Options:
A) + 7
B) - 7
C) + 1
D) - 1
Show Answer
Answer:
Correct Answer: A
Solution:
$ \overset{*,}{\mathop{KMnO_4}}, $ $ 1+x-2\times 4=0 $ ; $ x=8-1=+7 $ .