Question

select the correct answer.
what is the chemical name of the compound represented by the formula ni₂o₃? use the list of polyatomic ions and the periodic table to help you answer.
a. nickel oxide
b. nickel(iii) oxide
c. nickel(iii) oxide
d. nickel(vi) oxide

Explanation:

Step1: Determine the charge of nickel

In the compound \(Ni_2O_3\), oxygen has a charge of \(- 2\). Let the charge of nickel be \(x\). Using the formula for charge balance in a compound: \(2x+3\times(-2) = 0\). Solving for \(x\):

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So nickel has a charge of \(+3\).

Step2: Name the compound

The compound \(Ni_2O_3\) is an ionic compound. For ionic compounds with transition metals (like nickel), we use Roman numerals to indicate the charge of the metal ion. Since nickel has a charge of \(+3\), the name is nickel(III) oxide.

Answer:

B. nickel(III) oxide