Cobalt Compounds and Nitrate Ions

The video tutorial explains how to name the ionic compound Co(NO3)2. It begins by identifying the components: cobalt, a transition metal, and the nitrate ion, a polyatomic ion. The tutorial then details the process of naming the metal and the polyatomic ion, emphasizing the importance of recognizing the charge of the transition metal. Since cobalt can have multiple charges, the video explains how to determine the correct charge based on the nitrate ions present. Finally, the tutorial concludes with the full name of the compound: cobalt(II) nitrate.

What is the polyatomic ion present in Co(NO3)2?

• Nitrate

• Carbonate

• Sulfate

• Phosphate

Which element in Co(NO3)2 is a transition metal?

• Cobalt

• Nitrogen

• Oxygen

• Carbon

What is the initial name given to Co(NO3)2 before considering the charge of cobalt?

• Cobalt Oxide

• Cobalt Nitride

• Cobalt Nitrite

• Cobalt Nitrate

Why is it important to consider the charge of cobalt in Co(NO3)2?

• To determine the color of the compound

• To correctly name the compound

• To ensure the compound is stable

• To find the melting point

What is the charge of the nitrate ion in Co(NO3)2?

• 2+

• 1-

• 1+

• 2-

How many nitrate ions are present in Co(NO3)2?

• Four

• Three

• Two

• One

What is the final name of Co(NO3)2 considering the charge of cobalt?

• Cobalt(III) Nitrate

• Cobalt(II) Nitrate

• Cobalt(I) Nitrate

• Cobalt(IV) Nitrate

What is the net charge of the compound Co(NO3)2?

• 2+

• 1+

• 0

• 1-