Question

What is the name for ${\mathrm{FeCl}}_3$ using IUPAC nomenclature rules?

Answer 1

Ionic compound:

• Ionic compounds are formed when metals and non-metals combine.
• The naming of ionic compounds can start with the cation, and then move on to the nonmetal anion (element stem + -ide).

Naming the compound ${\mathrm{FeCl}}_3$:

• The charge of the metal is $3+$ is written in Roman numerals and is placed in parentheses to indicate that the element is a transition metal.
• Iron can have a $2+$ charge or a $3+$ charge.
• The anion (nonmetal) is chlorine. Therefore, chlorine becomes chloride.
• Thus, the name of the ionic compound becomes Iron $\left(\mathrm{III}\right)$ Chloride.