List of Oxidation States of The Elements - List

List

Element Noble gas
Element Negative
oxidation
states
Zero Positive
oxidation
states
Notes
−4 −3 −2 −1 0 +1 +2 +3 +4 +5 +6 +7 +8
hydrogen −1 H +1
helium He
lithium Li +1
beryllium Be +1 +2
boron B +1 +2 +3
carbon −4 −3 −2 −1 C +1 +2 +3 +4
nitrogen −3 −2 −1 N +1 +2 +3 +4 +5
oxygen −2 −1 O +1 +2
fluorine −1 F
neon Ne
sodium −1 Na +1
magnesium Mg +1 +2
aluminium Al +1 +2 +3
silicon −4 −3 −2 −1 Si +1 +2 +3 +4
phosphorus −3 −2 −1 P +1 +2 +3 +4 +5
sulfur −2 −1 S +1 +2 +3 +4 +5 +6
chlorine −1 Cl +1 +2 +3 +4 +5 +6 +7
argon Ar
potassium −1 K +1
calcium Ca +1 +2
scandium Sc +1 +2 +3
titanium −1 Ti +1 +2 +3 +4
vanadium −1 V +1 +2 +3 +4 +5
chromium −2 −1 Cr +1 +2 +3 +4 +5 +6
manganese −3 −2 −1 Mn +1 +2 +3 +4 +5 +6 +7
iron −2 −1 Fe +1 +2 +3 +4 +5 +6
cobalt −1 Co +1 +2 +3 +4 +5
nickel −1 Ni +1 +2 +3 +4
copper Cu +1 +2 +3 +4
zinc Zn +1 +2
gallium Ga +1 +2 +3
germanium −4 −3 −2 −1 Ge +1 +2 +3 +4
arsenic −3 As +1 +2 +3 +5
selenium −2 Se +1 +2 +4 +6
bromine −1 Br +1 +3 +4 +5 +7
krypton Kr +2
rubidium −1 Rb +1
strontium Sr +1 +2
yttrium Y +1 +2 +3
zirconium Zr +1 +2 +3 +4
niobium −1 Nb +1 +2 +3 +4 +5
molybdenum −2 −1 Mo +1 +2 +3 +4 +5 +6
technetium −3 −1 Tc +1 +2 +3 +4 +5 +6 +7
ruthenium −2 Ru +1 +2 +3 +4 +5 +6 +7 +8
rhodium −1 Rh +1 +2 +3 +4 +5 +6
palladium Pd +1 +2 +4
silver Ag +1 +2 +3 +4
cadmium Cd +1 +2
indium In +1 +2 +3
tin −4 Sn +2 +4
antimony −3 Sb +3 +5
tellurium −2 Te +2 +4 +5 +6
iodine −1 I +1 +3 +4 +5 +7
xenon Xe +1 +2 +4 +6 +8
caesium −1 Cs +1
barium Ba +2
lanthanum La +2 +3
cerium Ce +2 +3 +4
praseodymium Pr +2 +3 +4
neodymium Nd +2 +3 +4
promethium Pm +2 +3
samarium Sm +2 +3
europium Eu +2 +3
gadolinium Gd +1 +2 +3
terbium Tb +1 +2 +3 +4
dysprosium Dy +2 +3 +4
holmium Ho +2 +3
erbium Er +2 +3
thulium Tm +2 +3 +4
ytterbium Yb +2 +3
lutetium Lu +3
hafnium Hf +2 +3 +4
tantalum −1 Ta +2 +3 +4 +5
tungsten −2 −1 W +1 +2 +3 +4 +5 +6
rhenium −3 −1 Re +1 +2 +3 +4 +5 +6 +7
osmium −2 −1 Os +1 +2 +3 +4 +5 +6 +7 +8
iridium −3 −1 Ir +1 +2 +3 +4 +5 +6 +8
platinum −3 −2 −1 Pt +1 +2 +3 +4 +5 +6
gold −1 Au +1 +2 +3 +5
mercury Hg +1 +2 +4
thallium Tl +1 +3
lead −4 Pb +2 +4
bismuth −3 Bi +1 +3 +5
polonium −2 Po +2 +4 +6
astatine −1 At +1 +3 +5 +7
radon Rn +2 +6
francium Fr +1
radium Ra +2
actinium Ac +2 +3
thorium Th +2 +3 +4
protactinium Pa +2 +3 +4 +5
uranium U +2 +3 +4 +5 +6
neptunium Np +3 +4 +5 +6 +7
plutonium Pu +3 +4 +5 +6 +7 +8
americium Am +2 +3 +4 +5 +6 +7
curium Cm +3 +4
berkelium Bk +2 +3 +4
californium Cf +2 +3 +4
einsteinium Es +2 +3
fermium Fm +2 +3
mendelevium Md +2 +3
nobelium No +2 +3
lawrencium Lr +3
rutherfordium Rf +4
dubnium Db +5
seaborgium Sg +6
bohrium Bh +7
hassium Hs +8

A figure with a similar format (shown below) was used by Irving Langmuir in 1919 in one of the early papers about the octet rule. The periodicity of the oxidation states was one of the pieces of evidence that led Langmuir to adopt the rule.

Read more about this topic:  List Of Oxidation States Of The Elements

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