Oxidation number of the nitrogen atom in HNO3 is :
A
-1
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B
1
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C
0
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D
4
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E
5
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Solution
The correct option is E 5 Let X be the oxidation number of the nitrogen atom in HNO3. +1+X+3(−2)=0X−5=0X=+5 Hence, the oxidation number of the nitrogen atom in HNO3 is +5.