Final answer:
The rules for naming type III binary ionic compounds involve writing the metal cation first, followed by the nonmetal anion. If the metal can form ions with different charges, a Roman numeral is used to specify the charge of the metal cation.
Step-by-step explanation:
Rules for Naming Type III Binary Ionic Compounds:
- Write the metal cation first, followed by the nonmetal anion. Metal cations are always named first in binary ionic compounds.
- Use the element names to write the name of the cation and anion. The anion name should end in -ide.
- If the metal can form ions with different charges, specify the charge of the metal cation using a Roman numeral in parentheses after its name.
Example: FeCl3 is named iron(III) chloride.