Detailed Instructions: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Problem:Question: When the manganese is oxidized in the air at 1000 C it is completely transformed into Mn3O4. This is because:
Options: <0> Mn3O4 is the most volatile of all manganese oxides. <1> Mn3O4 can no longer react with oxygen. <2> There are no manganese oxides with a higher oxidation state. <3> Mn3O4 is the most stable of all manganese oxides. <4> Mn3O4 forms a protective layer that stops oxidation of the metal.
Solution:
chemistry