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How many electrons and protons are prese...

How many electrons and protons are present in the balanced half equation? `NO_(2)^(-)rarrNO`

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`overset(+3)(N)O_(2)^(-) rarr overset(+2)(N)O`
`NO_(2)^(-)+e^(-) rarr NO`
`NO_(2)^(-) + e^(-) rarr NO + H_(2)O`
Number of electrons =1 , Number of protons = 2
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