Complete and balance:
Mg(s) + NO3–(aq) → Mg2+(aq) + NO2(g)
Use oxidation numbers to identify the oxidized and reduced species:
Mg(s) + NO3–(aq) → Mg2+(aq) + NO2(g) Ox. Nos.:0 N, +5; O, –2 +2 N, +4; O, –2
Ox. Nos.:0 N, +5; O, –2 +2 N, +4; O, –2
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