Question

question 20 the name of co₂(so₄)₃ is blank 1. blank 1 add your answer

Explanation:

Step1: Identify the ions

In the compound $\ce{Co2(SO4)3}$, the cation is $\ce{Co^{3+}}$ (since the sulfate ion $\ce{SO4^{2-}}$ has a charge of -2, and there are 3 sulfate ions, so total negative charge is $3\times(-2) = -6$. To balance this, 2 cobalt ions must have a total positive charge of +6, so each cobalt ion has a charge of +3, i.e., $\ce{Co^{3+}}$) and the anion is $\ce{SO4^{2-}}$ (sulfate ion).

Step2: Name the cation with its charge

The cation is cobalt with a +3 charge, so we use the Roman numeral to indicate the charge: cobalt(III).

Step3: Name the anion

The anion is sulfate ($\ce{SO4^{2-}}$).

Step4: Combine the names

Combine the name of the cation and the anion. So the name of $\ce{Co2(SO4)3}$ is cobalt(III) sulfate.

Answer:

cobalt(III) sulfate