Question: When the following equation is balanced by the halfreaction method using the smallest set of whole-number stoichiometric coefficients possible, how many electrons are canceled when

When the following equation is balanced by the halfreaction method using the smallest set of whole-number stoichiometric coefficients possible, how many electrons are canceled when the two half-reactions are added together?
K(s) + N2(g) ⇒ K3N(s)

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