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What is the correct name for the compound Ni₂CO₃?

a) Nickel(II) oxide
b) Dinickel trioxide
c) Nickel trioxide
d) Nickel (III) oxide

1 Answer

5 votes

Final answer:

Nickel(II) carbonate is the correct IUPAC name for the compound Ni₂CO₃, as it is composed of Ni2+ ions and carbonate ions.

Thus, none of the provided options (a) Nickel(II) oxide, (b) Dinickel trioxide, (c) Nickel trioxide, (d) Nickel (III) oxide are correct.

Step-by-step explanation:

The correct name for the compound Ni₂CO₃ is nickel(II) carbonate. This is an ionic compound composed of Ni2+ ions and the carbonate ion (CO₃2-). Nickel can exhibit multiple oxidation states, but in this compound, each nickel ion has an oxidation state of +2. The II in nickel(II) reflects that oxidation state, and the carbonate is the polyatomic ion.

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