Topic 3- Redox, Rules For Determining Oxidation Numbers Flashcards
1
Q
Uncombined elements
A
Always 0
2
Q
Ions
A
Same as charge on the ion
3
Q
Group 1
A
+1
4
Q
Group 2
A
+2
5
Q
Aluminum
A
+3
6
Q
Hydrogen
A
+1, except when bonded to a metal (hydrides) it’s -1
7
Q
Chlorine
A
-1 except in a compound with F and O it’s positive
8
Q
Fluorine
A
-1
9
Q
Oxygen
A
-2 except it’s -1 in peroxides and +2 in FO2
