Solved

Which One of the Following Ionic Compounds Has an Incorrect

Question 127

Multiple Choice

Which one of the following ionic compounds has an incorrect formula or is not named correctly?

A) CoO, cobalt oxide
B) Co₂O₃, cobalt(III) oxide
C) CoO₂, cobalt(IV) oxide
D) Cu₂S, copper(I) sulfide
E) MgS, magnesium sulfide

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