1
Q
Uncombined elements oxidation state
A
0
2
Q
Combined group one metals oxidation state
A
+1
3
Q
Combined group two metals oxidation state
A
+2
4
Q
Combined halogens oxidation state
A
-1, does not apply in NaClO etc.
5
Q
Combined oxygen oxidation state
A
-2, not if bonded with Florine or in a peroxide (H202)
6
Q
Combined hydrogen oxidation state
A
+1, when bonded with a group one metal (-1)
Chem
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