|
Element
|
Oxidation
Number
|
Compounds, ions or chemical species
|
|
Sulphur (S)
|
- 2
|
H2S, ZnS, NaHS, (SnS3)2-, BaS, CS2
|
|
|
0
|
S, S4, S8, SCN-
|
|
|
+ 1
|
S2F2, S2Cl2
|
|
|
+ 4
|
SO2, H2SO3, (SO3)2-, SOCl2, NaHSO3, Ca[HSO3]2, [HSO3]-, SF4
|
|
|
+ 6
|
H2SO4, (SO4)2-, [HSO4]-, BaSO4, KHSO4, SO3, SF6, H2S2O7, (S2O7)2-
|
|
Nitrogen (N)
|
- 3
|
NH3, (NH4)+, AlN, Mg3N2, (N)3-, Ca3N2, CN-
|
|
|
- 2
|
N2H4, (N2H5)+
|
|
|
- 1
|
NH2OH
|
|
|
-1/3
|
NaN3, N3H
|
|
|
0
|
N2
|
|
|
+ 1
|
N2O
|
|
|
+ 2
|
NO
|
|
|
+ 3
|
HNO2, (NO2)-, NaNO2, N2O3, NF3
|
|
|
+ 4
|
NO2
|
|
|
+ 5
|
HNO3, (NO3)-, KNO3, N2O5
|
|
Chlorine (Cl)
|
- 1
|
HCl, NaCl, CaCl2, AlCl3, ICl, ICl5, SOCl2, CrO2Cl2, KCl, K2PtCl6, HAuCl4, CCl4HHHhhhhkkkkkk
|
|
|
0
|
Cl, Cl2
|
|
|
+ 1
|
HOCl, NaOCl, (OCl)-, Cl2O
|
|
|
+ 3
|
KClO2, (ClO2)-, HClO2
|
|
|
+ 4
|
ClO2
|
|
|
+ 5
|
(ClO3)-, KClO3, NaClO3, HClO3
|
|
|
+ 7
|
HClO4, Cl2O7, KClO4, (ClO4)-
|
|
Hydrogen (H)
|
- 1
|
NaH, CaH2, LiAlH4, LiH
|
|
|
+ 1
|
NH3, PH3, HF
|
|
Phosphorus (P)
|
- 3
|
PH3, (PH4)+, Ca3P2
|
|
|
0
|
P4
|
|
|
+ 1
|
H3PO2, KH2PO2, BaH4P2O4
|
|
|
+ 3
|
PI3, PBr3, PCl3, P2O3, H3PO3
|
|
|
+ 5
|
(PO4)3-, H3PO4, Ca3(PO4)2, H4P2O7, P4O10, PCl5, (P2O7)4-, Mg2P2O7, ATP
|
|
Oxygen (O)
|
- 2
|
H2O, PbO2, (CO3)2-, (PO4)2-, SO2, (C2O4)2-, HOCl, (OH)-, (O)2-
|
|
|
- 1
|
Na2O2, BaO2, H2O2, (O2)2-, Peroxides
|
|
|
- 1/2
|
KO2
|
|
|
0
|
O, O2, O3
|
|
|
+ 1
|
O2F2
|
|
|
+ 2
|
OF2
|
|
Carbon (C)
|
- 4
|
CH4
|
|
|
- 3
|
C2HHHhhhhjkjkkkH6
|
|
|
- 2
|
CH3Cl, C2H4
|
|
|
- 1
|
CaC2, C2H2
|
|
|
0
|
Diamond, Graphite, C6H12O6, C2H4O2, HCHO, CH2Cl2
|
|
|
+ 2
|
CO, CHCl3, HCN
|
|
|
+ 3
|
H2C2O4, (C2O4)2-
|
|
|
+ 4
|
CO2, H2CO3, (HCO3)-, CCl4, Na2CO3, Ca2CO3, CS2, CF4, (CO3)-2
|
|
Chromium (Cr)
|
+ 3
|
Cr2(SO4)3, CrCl3, Cr2O3, [Cr(H2O)4Cl3]
|
|
|
+ 6
|
K2CrO4, (CrO4)2-, K2Cr2O7, (Cr2O7)2-, KCrO3Cl, CrO2Cl2, Na2Cr3O10, CrO3
|
|
Manganese (Mn)
|
+ 2
|
MnO, MnSO4, MnCl2, Mn(OH)2
|
|
|
+ 8/3
|
Mn3O4
|
|
|
+ 3
|
Mn(OH)3
|
|
|
+ 4
|
MnO2, K2MnO3
|
|
|
+ 6
|
K2MnO4, (MnO4)2-
|
|
|
+ 7
|
KMnO4, (MnO4)-, HMnO4
|
|
Silicon (Si)
|
- 4
|
SiH4, Mg2Si
|
|
|
+ 4
|
SiO2, K2SiO3, SiCl4
|
|
Iron (Fe)
|
+8/3
|
Fe3O4
|
|
|
+ 2
|
FeSO4. (NH4)2SO4 (Ferrous ammonium sulphate), K4Fe(CN)6, FeCl2
|
|
|
+ 3
|
K3[Fe(CN)6], FeCl3
|
|
Iodine (I)
|
+ 7
|
H4IO6-, KIO4
|
|
Osmium (Os)
|
+ 8
|
OsO4
|
|
Xenon(Xe)
|
+ 6
|
XeO3, XeF6
|