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  4. Oxidation number of N in HNO3 is:

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Q. Oxidation number of $N$ in $ HNO_{3} $ is:

Haryana PMTHaryana PMT 2000

Solution:

Suppose the oxidation number of $N$ in $H N O_{3}$ is $x$.
$1+x+3(-2)=0$
or $x=+5$