Oxidation Numbers Flashcards
1
Q
Silver ions
A
+1
2
Q
Zinc ions
A
+2
3
Q
Hydrogen
A
+1 , unless bonded to a metal ion (hydride) where it becomes -(1) eg
4
Q
Group 1 metal ions
A
+1
5
Q
Group 2 metal ions
A
+2
6
Q
Group 3 metal ions
A
+3
7
Q
Transition metals
A
Indicated by Roman numerals (can be various)
8
Q
Oxygen
A
-2 unless bonded to peroxide or F in which case it becomes -1
9
Q
Halogens
A
-1 unless Cl/Br and I bonded to oxygen, as oxygen is assigned first
10
Q
Oxidation numbers must always
A
Add up to the overall charge on the molecule
11
Q
Elements bonded to an identical atom
A
Have an oxidation state if 0, along with unconvinced elements
