What is an easy way to find oxidation numbers?

1. determine the compound (ion covalent etc.)

2. Assign known oxidation number eg + 1 for H, - 2 for O

3. oxidation numbers in a compound equal to a compound's charge

4. Multiply the number of each atom by its oxidation number

5. Add the results together6. Calculate the unknown oxidation number based on the compound's charge.

This applies to all questions.