Mercury(II) Nitrate and Nitrate Ions

The video tutorial explains how to write the chemical formula for mercury(II) nitrate. It begins by identifying mercury as a transition metal with a 2+ charge and nitrate as a polyatomic ion with a 1- charge. The tutorial details the process of balancing these charges to form a neutral compound, resulting in the formula Hg(NO3)2. The video concludes with a summary of the steps taken to derive the formula.

What does the Roman numeral II indicate in mercury(II) nitrate?

• The charge of the mercury ion

• The number of mercury atoms

• The atomic number of mercury

• The number of nitrate ions

Where can you find information about the nitrate ion?

• In a table of elements

• In a table of metals

• In a table of polyatomic ions

• In the periodic table

What is the charge of the nitrate ion?

• 1-

• 1+

• 2+

• 2-

Why do we need two nitrate ions in mercury(II) nitrate?

• To balance the charge of mercury

• To increase the mass of the compound

• To make the compound soluble

• To stabilize the mercury ion

How do you ensure the compound mercury(II) nitrate is neutral?

• By adding more mercury ions

• By adding more nitrate ions

• By changing the oxidation state of mercury

• By balancing the charges of mercury and nitrate ions

What is the correct formula for mercury(II) nitrate?

• HgNO3

• Hg(NO3)2

• Hg2(NO3)2

• Hg2NO3

What is the net charge of mercury(II) nitrate?

• 1-

• 0

• 1+

• 2+