Ionic Compounds and Transition Metals

The video tutorial explains how to name the compound CrCO3 by recognizing chromium as a transition metal and CO3 as a polyatomic ion. It details the process of naming the metal and the polyatomic ion, determining the charge of chromium, and finalizing the name as chromium(II) carbonate. The tutorial also covers writing the formula from the name, emphasizing the ionic charges involved.

What type of compound is CrCO3 considered to be?

• Metallic compound

• Ionic compound

• Covalent compound

• Organic compound

What is the name of the polyatomic ion CO3?

• Phosphate ion

• Carbonate ion

• Nitrate ion

• Sulfate ion

Why is it necessary to include the charge of chromium in the name of CrCO3?

• Because chromium is an alkali metal

• Because chromium is a noble gas

• Because chromium is a transition metal

• Because chromium is a non-metal

What Roman numeral is used to indicate the charge of chromium in CrCO3?

• I

• IV

• III

• II

What is the full name of CrCO3?

• Chromium(IV) carbonate

• Chromium carbonate

• Chromium(II) carbonate

• Chromium(III) carbonate

What is the ionic charge of the carbonate ion in CrCO3?

• 4-

• 2-

• 3-

• 1-

If given the name chromium(II) carbonate, what would be the formula?

• Cr2CO3

• CrCO3

• Cr(CO3)2

• Cr2(CO3)3