List of top Chemistry Questions on Oxidation Number And Oxidation States

In which compound does Mn (Manganese) have its highest oxidation state?
What is the number of unpaired electrons in Lutetium (Lu) in the +3 oxidation state?
In the reaction \( 2\text{NaOH} + \text{Cl}_2 \rightarrow \text{NaCl} + \text{NaOCl} + \text{H}_2\text{O} \), what is the oxidation state of chlorine in sodium hypochlorite (NaOCl)?