What are types of controlled variables

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge

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