How do you know the oxidation state of an element

- How to know oxidation state of an element
- How to know the oxidation state of an element in a compound
- How do you find the oxidation state of an element
- How do you determine the oxidation state of an element
- How do you determine the oxidation state of an element in a compound
- How do you find the oxidation state of an element in a compound
- How to know the oxidation state of elements
- What is oxidation number