Ionic Compounds and Charges

The video tutorial explains how to name the compound K2SO4, known as potassium sulfate. It begins by identifying the sulfate ion (SO4) as a polyatomic ion and potassium as a metal from group 1 of the periodic table. The tutorial describes the process of naming ionic compounds, emphasizing the importance of recognizing the ionic charges. It explains that the sulfate ion has a two-minus charge, while potassium has a one-plus charge, requiring two potassium ions to balance the sulfate ion. The video concludes with a summary of the naming process.

What type of ion is SO4 in the compound K2SO4?

• Monatomic ion

• Polyatomic ion

• Anion

• Cation

Which group on the periodic table does potassium belong to?

• Group 17

• Group 18

• Group 1

• Group 2

What is the correct name for the compound K2SO4?

• Potassium sulfide

• Potassium sulfite

• Potassium sulfate

• Potassium sulfide

What is the charge of the sulfate ion in K2SO4?

• One plus

• Two minus

• Two plus

• One minus

How many potassium ions are needed to balance the charge of one sulfate ion in K2SO4?

• Two

• Four

• Three

• One

What is the ionic charge of potassium in K2SO4?

• One plus

• Two minus

• Two plus

• One minus