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.

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A compound contains 2 atoms of element X and 3 atoms of oxygen, and the compound is neutral. If the oxidation number of oxygen is -2, what is the oxidation number of X in X_2O_3?

Calculate the oxidation number of chromium in K_2Cr_2O_7.

Calculate the oxidation number of each oxygen atom in O_2F_2.

Calculate the oxidation number of nitrogen in NO_3^-.

Calculate the oxidation number of phosphorus in PO_4^{3-}.

Determine the oxidation number of chlorine in Cl_2O_7.

Determine the oxidation number of chromium in Cr_2O_7^{2-}.

Determine the oxidation number of manganese in MnO_4^-.

Determine the oxidation number of sulfur in H_2SO_4.

Explain why the oxidation number of oxygen in most compounds is -2, but in peroxides it is -1.

In the compound CaCl_2, what is the oxidation number of calcium?

In the compound H_2O_2, what is the oxidation number of each oxygen atom?

In the compound NaCl, what is the oxidation number of chlorine?

In the ion Fe^{3+}, what is the oxidation number of iron?

In the ion SO_3^{2-}, what is the oxidation number of sulfur?

What is the oxidation number of carbon in CO_2?

What is the oxidation number of hydrogen in H_2O?

What is the oxidation number of potassium in KMnO_4?

Assign oxidation numbers to all atoms in the ion C_2O_4^{2-} (oxalate ion).

Assign the oxidation number to each element in the compound Na_2S_2O_3.