A) \[{{F}_{2}}O\]
B) \[N{{F}_{3}}\]
C) both [a] and [b]
D) none of these
Correct Answer: D
Solution :
Key Idea: Sum of oxidation number of all elements in a compound is always zero. [a] Let oxidation number of F in \[{{F}_{2}}O=x\] \[\therefore \] \[2x+(-2)=0\] \[x=+\,1\] [b] Let oxidation number of F in\[N{{F}_{3}}=x\] \[\therefore \] \[+\,3+\,3x=0\] \[\therefore \] \[x=-1\]
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