Naming and Classifying Ionic Compounds

The video tutorial explains how to name the compound FeS. It starts by identifying FeS as a binary ionic compound composed of a metal (iron) and a non-metal (sulfur). The metal is named first as it appears on the periodic table, followed by the non-metal with an 'ide' suffix, resulting in 'iron sulfide'. Since iron is a transition metal, its charge is determined by the charge of sulfur, which is 2-. Therefore, iron must be 2+, and the compound is named 'iron(II) sulfide'. The video also mentions the older name 'ferrous sulfide'.

What type of compound is FeS classified as?

• Molecular compound

• Metallic compound

• Ionic compound

• Covalent compound

How do we name the metal in an ionic compound?

• By its chemical symbol

• As it appears on the periodic table

• By its atomic number

• By its electron configuration

What suffix is added to the non-metal in an ionic compound?

• -ite

• -ide

• -ate

• -ous

Why is it important to determine the charge of iron in FeS?

• To determine the physical state

• To correctly name the compound

• To find the molecular weight

• To balance the chemical equation

What is the ionic charge of sulfur in FeS?

• 1+

• 2-

• 2+

• 1-

What is the correct name for FeS using the modern naming convention?

• Iron(III) sulfide

• Ferrous sulfide

• Iron(II) sulfide

• Iron sulfide

What is the older name for FeS?

• Iron(III) sulfide

• Ferric sulfide

• Iron(II) sulfide

• Ferrous sulfide