Ionic Charges and Naming Compounds

The video tutorial explains how to name the compound CR2CO3. It begins by identifying the components, including the carbonate ion and chromium, a transition metal. The tutorial emphasizes the importance of understanding ionic charges, particularly for transition metals, and demonstrates how to calculate the charge of chromium in the compound. The final name, Chromium 3 Carbonate, is derived by considering the charges and using Roman numerals to indicate the charge of the chromium ion.

What is the ion present in Cr2CO3 that is bonded to chromium?

• Carbonate

• Nitrate

• Phosphate

• Sulfate

Why is it important to determine the charge on chromium in Cr2CO3?

• Because chromium is a non-metal

• Because chromium is a transition metal

• Because chromium is a halogen

• Because chromium is a noble gas

What is the ionic charge of the carbonate ion?

• 1-

• 2-

• 3-

• 4-

How many carbonate ions are present in Cr2CO3?

• Two

• Four

• One

• Three

What is the total negative charge contributed by the carbonate ions in Cr2CO3?

• 4-

• 2-

• 8-

• 6-

What is the charge on each chromium atom in Cr2CO3?

• 4+

• 1+

• 2+

• 3+

How is the charge of chromium represented in the name of Cr2CO3?

• In Greek letters

• As a prefix

• As a subscript

• In Roman numerals

What is the correct name for Cr2CO3?

• Chromium(III) Carbonate

• Chromium(IV) Carbonate

• Chromium(II) Carbonate

• Chromium Carbonate