Oxidation Number Flashcards
1
Q
What is the oxidation number of uncombined elements?
A
0
2
Q
What is the oxidation number of group 1 elements ?
A
+1
3
Q
What is the oxidation number of group 2 elements ?
A
+2
4
Q
What is the oxidation number of group 3 elements?
A
+3
5
Q
What is the oxidation number of Oxygen ?
A
-2
6
Q
What is the exception of oxygen’s oxidation number?
A
When in Hydrogen peroxide (H₂O₂) which has an oxidation number of -1
When it is bonded to only F (e.g F₂0) it has an oxidation number of +2
7
Q
What is the oxidation number of Fluorine?
A
-1
8
Q
What is the oxidation number of Chlorine?
A
-1
9
Q
What is the exception of Chlorine oxidation number?
A
Compounds with F or O where it has a positive value.
10
Q
What is the oxidation number of Hydrogen?
A
+1
Except in metal hydrides where its -1
