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Properties of Coo

Properties of CoO (Cobalt(II) oxide):

Compound NameCobalt(II) oxide
Chemical FormulaCoO
Molar Mass74.932595 g/mol

Chemical structure
CoO (Cobalt(II) oxide) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
Appearanceolive or gray powder
Odorodorless
Solubilityinsoluble
Density6.4500 g/cm³
Helium 0.0001786
Iridium 22.562
Melting1,933.00 °C
Helium -270.973
Hafnium carbide 3958

Alternative Names

Cobaltous oxide
Cobalt monoxide

Elemental composition of CoO
ElementSymbolAtomic weightAtomsMass percent
CobaltCo58.933195178.6483
OxygenO15.9994121.3517
Mass Percent CompositionAtomic Percent Composition
Co: 78.65%O: 21.35%
Co Cobalt (78.65%)
O Oxygen (21.35%)
Co: 50.00%O: 50.00%
Co Cobalt (50.00%)
O Oxygen (50.00%)
Mass Percent Composition
Co: 78.65%O: 21.35%
Co Cobalt (78.65%)
O Oxygen (21.35%)
Atomic Percent Composition
Co: 50.00%O: 50.00%
Co Cobalt (50.00%)
O Oxygen (50.00%)
Identifiers
CAS Number1307-96-6
SMILES[Co]=O
SMILES[Co+2].[O-2]
Hill formulaCoO

Related compounds
FormulaCompound name
CoO2Cobalt(II) peroxide
Co2O3Cobalt(III) oxide
Co2(O2)3Cobalt(III) peroxide

Sample reactions for CoO
EquationReaction type
CoO + O2 = Co2O3synthesis
CoO = Co + O2decomposition

Related
Molecular weight calculator
Oxidation state calculator

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