Ionic Compounds and Mercury(I) Oxide

The video tutorial explains how to write the formula for Mercury(I) Oxide using the periodic table. It covers the identification of mercury and oxygen, the concept of ionic compounds, and the charges of the elements involved. The crisscross method is introduced to balance the charges and derive the correct formula. The tutorial concludes with a verification of the formula, ensuring the charges add up to zero, resulting in the correct formula Hg2O.

What is the element symbol for mercury?

• Hg

• Me

• Mu

• Mc

What type of compound is formed when a metal and a non-metal combine?

• Hydrogen

• Metallic

• Covalent

• Ionic

What is the ionic charge of mercury in Mercury(I) Oxide?

• 2+

• 1+

• 2-

• 1-

What is the ionic charge of oxygen in Mercury(I) Oxide?

• 1+

• 1-

• 2+

• 2-

Which method is used to balance the charges in Mercury(I) Oxide?

• Cross-multiplication

• Substitution

• Crisscross

• Elimination

In the crisscross method, what happens to the charges?

• They are added

• They are ignored

• They are subtracted

• They are swapped

How do you verify the formula for Mercury(I) Oxide?

• By observing color

• By checking the net charge

• By counting atoms

• By measuring mass

What is the final formula for Mercury(I) Oxide?

• HgO

• Hg2O

• HgO2

• Hg2O2

What is the net charge of Mercury(I) Oxide?

• 1+

• 0

• 2-

• 1-