Naming Compounds with Transition Metals

The video tutorial explains how to name the compound COS, which consists of cobalt and sulfur. It begins by identifying cobalt as a transition metal and sulfur as a nonmetal. The process involves writing the names as they appear on the periodic table, modifying the nonmetal's name to form 'sulfide,' and adding a Roman numeral to indicate the charge of the transition metal. The final name is 'cobalt(II) sulfide,' reflecting the 2+ charge of cobalt. The tutorial concludes with a brief thank you from Dr. V.

What is the first step in naming a compound with a transition metal?

• Write the name of the metal as it appears on the periodic table

• Identify the charge of the metal

• Determine the oxidation state of the metal

• Write the name of the nonmetal first

How do you modify the name of the nonmetal in a compound?

• Add 'ite' to the end

• Add 'ate' to the end

• Add 'ide' to the end

• Add 'ium' to the end

Why is it necessary to specify the charge of a transition metal in a compound's name?

• Because it is a requirement for all metals

• Because transition metals can have multiple oxidation states

• Because it affects the color of the compound

• Because it determines the compound's solubility

What is the charge of the sulfide ion?

• 1-

• 2-

• 2+

• 3-

How is the charge of cobalt represented in the name of the compound?

• Using Roman numerals

• Using Greek letters

• Using chemical symbols

• Using Arabic numerals

What is the full name of the compound CoS?

• Cobalt(III) Sulfide

• Cobalt(IV) Sulfide

• Cobalt Sulfide

• Cobalt(II) Sulfide