Ionic Compounds and Cobalt Chemistry

The video tutorial explains how to name the compound CoCl3, which is an ionic compound consisting of cobalt, a transition metal, and chlorine. The process involves identifying the elements, determining the ionic charges, and using Roman numerals to indicate the charge of the transition metal. The final name is 'cobalt(III) chloride', reflecting the 3+ charge of cobalt when bonded with three chloride ions.

What type of compound is CoCl3?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

How is the name of the metal in CoCl3 written?

• With a suffix indicating its charge

• With a prefix indicating the number of atoms

• In lowercase letters

• As it appears on the periodic table

What change is made to the name of chlorine in CoCl3?

• It is written as 'chlorate'

• A prefix is added to indicate the number of atoms

• The ending is changed from 'ine' to 'ide'

• It is written in uppercase

Why is it important to consider cobalt as a transition metal in CoCl3?

• Because it is not found on the periodic table

• Because it can have different ionic charges

• Because it is a nonmetal

• Because it can form covalent bonds

How many chlorine atoms are bonded to cobalt in CoCl3?

• Four

• Three

• Two

• One

What is the ionic charge of cobalt in CoCl3?

• 2+

• 3+

• 4+

• 1+

How is the ionic charge of cobalt represented in the name of CoCl3?

• With a subscript

• With a suffix

• With a Roman numeral in parentheses

• With a prefix