Cobalt Compounds and Nomenclature

The video tutorial explains how to name the compound Co33 by identifying Cobalt as a transition metal and NO3 as the nitrate ion. It details the process of naming the metal and polyatomic ion, determining the charge of Cobalt, and using a Roman numeral to indicate the charge in the compound's name, resulting in Cobalt 3 nitrate.

What is the chemical symbol for the transition metal in Co(NO3)3?

• Ca

• Cu

• Co

• Cr

Which ion is represented by NO3 in the compound Co(NO3)3?

• Nitrite

• Nitrate

• Nitride

• Nitrogen

What is the first step in naming a compound like Co(NO3)3?

• Calculate the molecular weight

• Determine the number of ions

• Write the name of the metal

• Identify the charge of the metal

How do you determine the charge of Cobalt in Co(NO3)3?

• By the color of the compound

• By the Roman numeral in the name

• By the number of nitrate ions

• By the position of Cobalt in the periodic table

What Roman numeral is used to indicate the charge of Cobalt in Co(NO3)3?

• III

• IV

• II

• I

Why is it necessary to use a Roman numeral in the name of Co(NO3)3?

• To indicate the number of nitrate ions

• To show the charge of the transition metal

• To specify the molecular weight

• To denote the color of the compound

What is the complete name for the compound Co(NO3)3?

• Cobalt(III) nitrate

• Cobalt(II) nitrate

• Cobalt(IV) nitrate

• Cobalt nitrate