Understanding Sulfate Ion Properties

The video tutorial explains how to write the formula for rubidium sulfate. It begins by identifying rubidium and sulfate, highlighting sulfate as a polyatomic ion with a charge of 2-. The tutorial emphasizes the importance of charge balancing in forming ionic compounds, using rubidium's 1+ charge to balance sulfate's 2- charge. The final formula for rubidium sulfate is presented as Rb2SO4.

What is the chemical symbol for rubidium?

• Rh

• Rb

• Ru

• Re

Which of the following is a characteristic of the sulfate ion?

• It is a monatomic ion

• It has a charge of 2-

• It is found on the periodic table

• It is a metal

Why is it important to memorize the sulfate ion's formula?

• It is a monatomic ion

• It is a metal

• It is a common polyatomic ion

• It is rarely used in chemistry

What type of compound is rubidium sulfate?

• Covalent

• Ionic

• Molecular

• Metallic

How do you balance the charges in rubidium sulfate?

• Use two rubidium ions

• Use four rubidium ions

• Use one rubidium ion

• Use three rubidium ions

What is the final formula for rubidium sulfate?

• Rb4SO4

• Rb3SO4

• Rb2SO4

• RbSO4

What is the charge of rubidium in rubidium sulfate?

• 2-

• 1-

• 2+

• 1+