Calcium and Permanganate Compounds

The video tutorial explains how to write the formula for calcium permanganate. It begins by identifying calcium from the periodic table and recognizing permanganate as a polyatomic ion with a 1- charge. The tutorial discusses the need to balance ionic charges, noting that calcium has a 2+ charge, requiring two permanganate ions to balance. The formula is written as Ca(MnO4)2. The video concludes by explaining how to name the compound from its formula.

What is the chemical symbol for calcium?

• Cu

• C

• Cl

• Ca

Which of the following is a polyatomic ion?

• Ca

• O2

• MnO4

• H2O

What is the charge of the permanganate ion?

• 1-

• 1+

• 2-

• 2+

In which group of the periodic table is calcium found?

• Group 3

• Group 4

• Group 1

• Group 2

How many permanganate ions are needed to balance the charge of one calcium ion?

• 4

• 3

• 2

• 1

What is the correct formula for calcium permanganate?

• Ca(MnO4)3

• CaMnO4

• Ca(MnO4)2

• Ca2MnO4

What is the name of the compound with the formula Ca(MnO4)2?

• Calcium oxide

• Calcium manganate

• Calcium dioxide

• Calcium permanganate