A student reacts sodium chloride and lithium bromide. He collects the products in a jar and performs several tests on them. He concludes that product A has a metal and a nonmetal and that the metal has an oxidation number of whereas the nonmetal has an oxidation number of . What can you conclude from these results?

What is the oxidation number of the manganese in potassium permanganate?

Which of the following is the correct oxidation number of manganese in Manganese(III) oxide?

The oxidation numbers of calcium and chromium in the compound are __________ and __________, respectively.

In the compound , what is the oxidation number of ?

Compared to oxygen in water, the oxygen in hydrogen peroxide has __________ valence electron(s).

Which of the following is true regarding the correct oxidation number of potassium in potassium bromide?