Manganese(III) Nitrate and Nitrate Ions

The video tutorial explains how to write the chemical formula for manganese 3 nitrate. It begins by identifying the element symbol for manganese and the significance of the Roman numeral indicating its charge. The tutorial then discusses the nitrate ion, a polyatomic ion, and how to balance the charges to form a neutral compound. Finally, it demonstrates the correct way to write the formula, including the use of parentheses for multiple ions.

What does the Roman numeral III indicate in manganese(III) nitrate?

• The charge of the manganese ion

• The number of nitrate ions

• The number of electrons in manganese

• The atomic number of manganese

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

• It is found on the periodic table

• It consists of a single atom

• It is always neutral

• It has a charge and consists of multiple atoms

What is the charge of the nitrate ion?

• 3+

• 1-

• 2-

• 1+

Why do we use parentheses in the formula for manganese(III) nitrate?

• To indicate the charge of the compound

• To highlight the manganese ion

• To show that there are multiple nitrate ions

• To separate the elements

How many nitrate ions are needed to balance the charge of one manganese(III) ion?

• Four

• One

• Three

• Two

What is the correct formula for manganese(III) nitrate?

• Mn(NO3)3

• MnN3

• Mn(NO3)2

• Mn3(NO3)

If given the formula Mn(NO3)3, what does the Roman numeral III indicate?

• The total charge of the compound

• The number of nitrate ions

• The number of manganese atoms

• The charge of the manganese ion