Naming and Charges of Transition Metals

The video tutorial explains how to name the compound CO2 by identifying its components: Cobalt, a transition metal, and the polyatomic ion hydroxide. It details the process of writing the name for the metal as it appears on the periodic table, followed by the polyatomic ion. The tutorial emphasizes the importance of determining the charge of the transition metal, which is indicated by a Roman numeral in the compound's name. The final name for CO2 is Cobalt 2 hydroxide, reflecting the 2+ charge on Cobalt.

What is the first step in naming CO2?

• Identify the polyatomic ion

• Recognize the transition metal

• Determine the charge of the metal

• Write the chemical formula

Which element is identified as a transition metal in CO2?

• Oxygen

• Cobalt

• Carbon

• Hydrogen

What is the polyatomic ion present in CO2?

• Hydroxide

• Sulfate

• Nitrate

• Carbonate

How do you denote the charge of a transition metal in a compound name?

• By a Roman numeral in parentheses

• By changing the metal's name

• With a prefix

• Using a subscript

What is the charge of the hydroxide ion?

• 2-

• 1+

• 2+

• 1-

What is the final name for CO2?

• Cobalt hydroxide

• Cobalt(II) oxide

• Cobalt(II) hydroxide

• Cobalt dioxide

Why is a Roman numeral used in the name Cobalt(II) hydroxide?

• To represent the number of Cobalt atoms

• To show the charge of the Cobalt ion

• To denote the molecular weight

• To indicate the number of hydroxide ions