2.1.5 - redox

Question 1

what are the 3 general rules of oxidation

Answer 1

1. all elements in their natural state have an oxidation number of 0
2. the sum of the oxidation numbers of the components in an ion add to the charge of the ion — INCLUDING POLYATOMIC IONS (treat as one atom)
3. the sum of oxidation numbers in any atom add to 0

Question 2

what are the 5 oxidation rules that follow a certain order

Answer 2

1. ox number of groups 1, 2, and 3* are ALWAYS +1, +2, and +3
2. ox number of fluorine is ALWAYS -1
3. ox number of hydrogen is USUALLY -1
4. ox number of oxygen is USUALLY -2
5. ox number of chlorine is USUALLY -1

*group 3 as in group 13 - NOT transition metals!