Permanganate Ion and Its Compounds

The video tutorial explains the permanganate ion, highlighting its polyatomic nature and negative charge. It provides the formula MnO4- and discusses how it bonds with elements like potassium and calcium. The tutorial emphasizes memorization or referencing a table for polyatomic ions and concludes with a recap of the key points.

What is the charge of the permanganate ion?

• 1+

• 1-

• 2+

• 2-

Why can't the formula for the permanganate ion be found on the periodic table?

• It is a halogen.

• It is a transition metal.

• It is a polyatomic ion.

• It is a noble gas.

What is the formula for potassium permanganate?

• KMnO4

• K2MnO3

• K2MnO4

• KMnO3

How many permanganate ions are needed to bond with one calcium ion?

• One

• Four

• Two

• Three

What is the formula for calcium permanganate?

• CaMnO4

• CaMnO3

• Ca(MnO4)2

• Ca2MnO4

What is the recommended way to learn the formula for the permanganate ion?

• Look it up on the periodic table.

• Memorize it or use a table of polyatomic ions.

• Calculate it using atomic numbers.

• Derive it from its chemical properties.