Oxidation Number and Rules for Assigning Oxidation Numbers

Chemistry ⇒ Redox Reactions and Electrochemistry

Oxidation Number and Rules for Assigning Oxidation Numbers starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Oxidation Number and Rules for Assigning Oxidation Numbers. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 11

Assign the oxidation number to chromium in Cr₂O₇^2-.

Assign the oxidation number to each element in NH₄Cl.

Assign the oxidation number to sulfur in H₂SO₄.

Calculate the oxidation number of carbon in CH₄.

Calculate the oxidation number of chromium in K₂Cr₂O₇.

Calculate the oxidation number of nitrogen in NO₃^-.

Calculate the oxidation number of phosphorus in H₃PO₄.

Determine the oxidation number of chlorine in ClO₂^-.

Explain the steps to assign oxidation numbers to atoms in a polyatomic ion.

Explain why the oxidation number of hydrogen is -1 in metal hydrides.

In the compound FeCl₃, what is the oxidation number of iron?

In the compound KMnO₄, what is the oxidation number of Mn?

In the compound Na₂O₂, what is the oxidation number of oxygen?

In the ion MnO₄^-, what is the oxidation number of manganese?

State the oxidation number of each element in H₂SO₃.

State the oxidation number of each element in Na₂SO₄.

What is the oxidation number of chlorine in NaClO₃?

What is the oxidation number of oxygen in H₂O₂?

What is the oxidation number of oxygen in most compounds?

A compound contains 2 atoms of element X and 3 atoms of oxygen, and has a net charge of -2. If the oxidation number of X is +3, what is the chemical formula of the compound?