Calculate Oxidation Numbers Practice Problems

What is the oxidation number for all atoms in F₂?

Determine the oxidation number of iodine on both sides of the following redox reaction:

2 S₂O₃²⁻_(aq) + I₃⁻_(aq) → S₄O₆²⁻_(aq) + 3 I⁻_(aq)

Identify the compound in which the underlined element is in the oxidation state of +2.

Each of the given pairs below has two different compounds with one element in common. Identify the pair which has the indicated element in the same oxidation state in both compounds.

Manganese is a transition metal with eight known oxidation states. Identify which one of the compounds below consists of manganese in its lowest oxidation state: