Oxidation Numbers and Compound Charges

This video tutorial explains how to determine the oxidation numbers for each element in BaMnO4, known as barium manganate. It starts by noting that the compound is neutral, meaning the oxidation numbers must sum to zero. Barium, being in group two of the periodic table, has an oxidation number of +2. The video then sets up an equation to find the oxidation number of manganese, which is unknown initially. Oxygen is typically -2, and using this information, the equation is solved to find that manganese has an oxidation number of +6. The video concludes with a brief thank you from Dr. B.

What is the overall charge of the compound BaMnO4?

• Positive

• Variable

• Negative

• Neutral

Which group does barium belong to on the periodic table?

• Group 4

• Group 1

• Group 2

• Group 3

What is the typical oxidation number of oxygen in compounds?

• +2

• -1

• -2

• +1

What is the oxidation number of barium in BaMnO4?

• +4

• +3

• +2

• +1

In the equation set up to find the oxidation number of manganese, what is the value of 'x'?

• 7

• 4

• 5

• 6

What is the oxidation number of manganese in BaMnO4?

• +4

• +5

• +6

• +7