Roman Numerals in Ionic Compounds

The video tutorial explains how to name the compound FeI3. It starts by identifying iron as a metal and iodine as a non-metal, forming an ionic compound. Since iron is a transition metal, Roman numerals are used to indicate its charge. The tutorial explains how to balance the charges, resulting in the name Iron III Iodide. The video also covers how to write the formula from the name, ensuring the charges are balanced.

What type of compound is formed when a metal and a non-metal combine?

• Organic compound

• Ionic compound

• Metallic compound

• Covalent compound

Why do we use Roman numerals in the name of some compounds?

• To indicate the number of atoms

• To show the charge of transition metals

• To denote the compound's state

• To specify the compound's color

What is the charge of iodine in ionic compounds?

• 1-

• 2+

• 2-

• 1+

How many iodine ions are needed to balance one iron ion in FeI3?

• Three

• One

• Two

• Four

What is the correct name for the compound FeI3?

• Iron iodide

• Iron(II) iodide

• Iron(III) iodide

• Iron triiodide

If given the name Iron(III) Iodide, what is the charge on the iron ion?

• 4+

• 3+

• 2+

• 1+

How do you determine the formula from the name Iron(III) Iodide?

• By knowing iron is 3+ and iodine is 1-

• By knowing iron is 1+ and iodine is 1-

• By knowing iron is 2+ and iodine is 1-

• By knowing iron is 3+ and iodine is 2-

What is the significance of the Roman numeral in Iron(III) Iodide?

• It denotes the phase of the compound

• It shows the oxidation state of iron

• It represents the total charge of the compound

• It indicates the number of iodine atoms