Interpretation:
The formulas for the given compounds are to be stated. The characteristic of the polyatomic ions of the colored compounds that are not found in the white compounds is to be stated. The other polyatomic anions that would form colored compounds of potassium are to be predicted.
Concept introduction:
Ionic compounds are those compounds that have the strong electrostatic force of attraction between the oppositely charged ions. The positively charged ion is known as cation and negatively charged ion is called anion. Conventionally, the formula of the cation is written at left-hand side and formula of the anion is written at right-hand side while writing the formula of an ionic compound.
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