Polyatomic Ions and Cadmium Compounds

The video tutorial explains how to write the formula for cadmium acetate. It begins by introducing cadmium as a transition metal with a consistent ionic charge of 2+. The tutorial then describes acetate as a polyatomic ion with a charge of 1-. The process of balancing these charges to form cadmium acetate is demonstrated, resulting in the formula Cd(CH3COO)2. The video concludes with a reminder of the alternative notation for acetate.

What is the chemical symbol for cadmium?

• Ca

• Ce

• Cd

• Cm

What is the ionic charge of cadmium?

• 4+

• 3+

• 2+

• 1+

Which of the following is a polyatomic ion?

• Sulfate

• Acetate

• Chloride

• Oxide

What is the ionic charge of the acetate ion?

• 1-

• 2+

• 2-

• 1+

How do you balance the charges in cadmium acetate?

• Change the charge of cadmium

• Use parentheses to group acetate ions

• Add more acetate ions

• Add more cadmium ions

What is the correct formula for cadmium acetate?

• Cd(CH3COO)2

• CdCH3COO

• Cd2(CH3COO)

• Cd(CH3COO)

Which alternative representation of acetate is also correct?

• CH3COO

• CH3CO2

• CH3COOH

• CH3CO