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Balance the reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1." Pb(NO₃)₂ + NaI → PbI₂ + NaNO₃

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Balanced chemical reaction: Pb(NO₃)₂ + 2NaI → PbI₂ + 2NaNO₃.
In this balanced chemical reaction there are two atoms of sodium, one atom of lead, two atoms of nitrogen, six atoms of oxygen and two atoms of iodine in both side of chemical reaction.
Lead has oxidation number +2, sodium has +1 and iodine -1.

Answer:

blank, 2, blank, 2

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