Oxidation number Rules and exceptions Flashcards
1
Q
What is an oxidation number?
A
the charge that an element would have if the compound was fully ionic
2
Q
Oxidation number of H
A
Always +1
3
Q
Exception oxidation number of H
A
in metal hydroxide its -1
4
Q
Oxidation number of O
A
Always -2
5
Q
Exception oxidation number of O
A
except for O-F then O is -1
6
Q
Oxidation number of halogens
A
Always -1
7
Q
Oxidation number of elements by themselves
A
always 0
8
Q
OIL:
A
if an element loses electrons in a reaction = Oxidation and the oxidation number increases
9
Q
RIG:
A
if an element gains electrons in a reaction = Reduction and the oxidation number decreases
