Iron and Sulfur Compounds

The video tutorial explains how to name the compound Fe2S3. It starts by identifying the compound as ionic, consisting of a metal (iron) and a nonmetal (sulfur). The metal is named first, followed by the nonmetal with an 'ide' suffix. Since iron is a transition metal, its charge is determined by the charge of sulfur, which is 2-. The compound must be neutral, so the charge on iron is deduced to be 3+. This is indicated by a Roman numeral in the name, resulting in the final name: iron(III) sulfide.

What type of compound is Fe2S3?

• Molecular compound

• Metallic compound

• Ionic compound

• Covalent compound

Which element is named first in the compound Fe2S3?

• Iron

• Oxygen

• Carbon

• Sulfur

What suffix is used for the nonmetal in Fe2S3?

• -ide

• -ate

• -ous

• -ite

Why is it necessary to determine the charge of iron in Fe2S3?

• Iron is a transition metal with variable charges

• Iron is a nonmetal

• Iron is not part of the compound

• Iron always has a fixed charge

What is the ionic charge of sulfur in Fe2S3?

• 1+

• 2-

• 3+

• 4-

How many sulfur atoms are present in Fe2S3?

• 2

• 1

• 4

• 3

What is the charge on each iron ion in Fe2S3?

• 4+

• 1+

• 2+

• 3+

What Roman numeral is used in the name of Fe2S3 to indicate the charge of iron?

• III

• I

• IV

• II

What is the correct name for Fe2S3?

• Iron(III) sulfide

• Iron sulfide

• Iron(II) sulfide

• Iron(IV) sulfide