6. Chemical Quantities & Aqueous Reactions

Which of the following elements would have the lowest oxidation number?

What is the common oxidation state of the alkaline earth metals (Group 2)?

What is the oxidation state of each element in K₂Cr₂O₇?

The total oxide ion charge in a formula unit of COO is 2–. What is the charge on each cobalt ion?

For the reaction KClO₄ ⟶ KCl +2O₂ assign oxidation numbers to each element on each side of the equation.

Identify the oxidation state of Cl in AlCl₄⁻.

What is the oxidation state of each element in Mn(CrO₄)₂?

What is the oxidation state of each element in K₂Cr₂O₇?

What is the oxidation number of tin (Sn) in the compound Na₂SnO₂?

For the reaction KClO₂ ⟶ KCl + O₂ assign oxidation numbers to each element on each side of the equation.

Determine the oxidation number (oxidation state) of each element in the three compounds. CuCO₃

What is the oxidation number of manganese (Mn) in potassium permanganate (KMnO₄)?