Naming and Charges of Cobalt Compounds

The video tutorial explains how to name the compound CoO, starting with identifying cobalt as a transition metal and oxygen as a non-metal. The process involves writing the metal's name first, followed by the non-metal with an 'ide' ending, resulting in 'cobalt oxide.' Since cobalt is a transition metal, its charge must be specified using Roman numerals, leading to the final name 'cobalt(II) oxide.' The tutorial emphasizes the importance of balancing charges to achieve a net charge of zero.

What type of metal is cobalt in the compound CoO?

• Transition metal

• Alkaline earth metal

• Alkali metal

• Noble gas

What is the first step in naming the compound CoO?

• Add a prefix to the metal name

• Write the name of the non-metal

• Determine the charge of the metal

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

How do you modify the name of the non-metal in CoO?

• Add 'ium' to the end

• Add 'ate' to the end

• Add 'ide' to the end

• Add 'ite' to the end

Why is it necessary to include the charge of cobalt in the compound name?

• Because cobalt is an alkali metal

• Because cobalt is a noble gas

• Because cobalt is a non-metal

• Because cobalt is a transition metal

What is the charge of oxygen in the compound CoO?

• 0

• 3-

• 2-

• 1-

What Roman numeral is used in the name of CoO to indicate cobalt's charge?

• III

• II

• I

• IV

What is the full name of the compound CoO?

• Cobalt oxide

• Cobalt(II) oxide

• Cobalt(III) oxide

• Cobalt(IV) oxide