1. Identify the Metal
* The metal has 24 electrons. Let's assume it's a neutral atom. This means it has 24 protons.
* The element with 24 protons is Chromium (Cr).
2. Determine the Most Stable Ion of Sulfur
* Sulfur (S) is in Group 16 of the periodic table.
* It tends to gain two electrons to achieve a stable octet configuration.
* Therefore, the most stable ion of sulfur is sulfide (S²⁻).
3. Determine the Formula of the Compound
* To balance the charges, we need two chromium ions (Cr³⁺) for every three sulfide ions (S²⁻).
* The formula of the compound is Cr₂S₃.
4. Name the Compound
* The compound is a binary ionic compound.
* The cation (chromium) is named first, followed by the anion (sulfide).
* The charges on the ions are not explicitly written in the name.
Therefore, the correct name of the compound is chromium(III) sulfide.
