Question

Which of the following naming rules would apply to CaCO 3?
Question 4 options:

metal cation + nonmetal anion(–ide)


metal cation + (roman numeral valence) + nonmetal anion(–ide)


metal + polyatomic anion

polyatomic cation + nonmetal anion(–ide

Answer 1

Ca(CO3) = Calcium carbonate

Calcium has a 2+ charge and is a metal, so it's a cation.
Carbonate is a poly atomic ion

so this should be metal + polyatomic anion

Answer 2

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