Oxidation States Quiz

What is the oxidation state of aluminum in Al2O3?

• +2

• +1

• +3

• 0

Why is it generally easier to determine the oxidation state of metals compared to nonmetals?

• Metals are always in elemental form.

• Metals have a single electron.

• Metals are more reactive.

• Metals have a fixed oxidation state.

What is a common challenge when determining the oxidation state of nonmetals?

• Nonmetals can have multiple oxidation states.

• Nonmetals are always positive.

• Nonmetals have a single oxidation state.

• Nonmetals are always neutral.

In which compound does oxygen have an oxidation state of -1?

• H2O2

• O3

• O2

• H2O

What is the oxidation state of oxygen in most compounds?

• +1

• -2

• -1

• 0

Which of the following is true about the oxidation state of oxygen in O2?

• It is -2.

• It is -1.

• It is 0.

• It is +1.

What is the oxidation state of chlorine in compounds where it is not the most electronegative element?

• +5

• +3

• +1

• -1

Which element's oxidation number is being determined in the final section of the video?

• Nitrogen

• Oxygen

• Chlorine

• Sulfur

What is the oxidation state of bromine in compounds where it is not the most electronegative element?

• -1

• +1

• +5

• +3

What is the oxidation state of iodine in compounds where it is not the most electronegative element?

• -1

• +1

• +3

• +5