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 Cr_2O_7^{2-}.

Assign the oxidation number to each element in NH_4Cl.

Assign the oxidation number to sulfur in H_2SO_4.

Calculate the oxidation number of carbon in CH_4.

Calculate the oxidation number of chromium in K_2Cr_2O_7.

Calculate the oxidation number of nitrogen in NO_3^-.

Calculate the oxidation number of phosphorus in H_3PO_4.

Determine the oxidation number of chlorine in ClO_2^-.

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 FeCl_3, what is the oxidation number of iron?

In the compound KMnO_4, what is the oxidation number of Mn?

In the compound Na_2O_2, what is the oxidation number of oxygen?

In the ion MnO_4^-, what is the oxidation number of manganese?

State the oxidation number of each element in H_2SO_3.

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?