Cobalt Phosphide Compound Naming

The video tutorial explains how to name the compound COP by identifying cobalt as a transition metal and phosphorus as a non-metal. It details the process of naming the metal and non-metal according to the periodic table, forming cobalt phosphide, and assigning charges using Roman numerals to finalize the name as cobalt(III) phosphide.

What is the first step in naming the compound CoP?

• Determine the non-metal's group number

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

• Identify the charge of cobalt

• Replace the non-metal's ending with 'ide'

Why is it necessary to modify the ending of the non-metal's name in CoP?

• To show the compound's molecular weight

• To differentiate it from other non-metals

• To follow the naming convention for ionic compounds

• To indicate the metal's charge

What does the Roman numeral in the name 'cobalt 3 phosphide' signify?

• The number of phosphorus atoms

• The charge of the cobalt ion

• The total number of atoms in the compound

• The group number of cobalt

How do you determine the charge of cobalt in CoP?

• By the charge of the phosphide ion

• By the color of the compound

• By the position of cobalt in the compound

• By looking at the periodic table

What is the charge of the phosphide ion in CoP?

• 2-

• 3-

• 1-

• 4-

If given the name 'cobalt 3 phosphide', how would you write the formula?

• CoP

• CoP3

• Co3P

• Co3P2