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Praxis II General Science

Category - Chemistry

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Which one of the following chemical compounds is incorrectly matched with its chemical name?

MgCl₂ - Magnesium chloride
PbI₂ - Lead di-iodide
CuSO₃ - Copper sulfite
NiO - Nickel oxide
KCl - Potassium chloride

Explanation

Answer: B - All of the compounds listed are ionic compounds. Ionic compounds do not require a numeric prefix in the name. Thus, answer B is not correct, and should simply be named lead iodide.

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