›› Physical and chemical properties of Chromium

Atomic Number:24
Element Symbol:Cr
Element Name:Chromium
Atomic Weight:51.9961
Group Number:6
Group Name:none
Period Number:4
Ground State Configuration:[Ar] 3d5 4s
Ground State Level:7S3
Standard State:Solid
Bond Length:249.8
Atomic Radius Empirical:140
Atomic Radius Calculated:166
Covalent Radius Empirical:127
Electron Affinity:64.3
First Ionization Energy:652.9
Pauling Electronegativity:1.66
Sanderson Electronegativity:1.66
Allred Rochow Electronegativity:1.56
Density Of Solid:7140
Molar Volume:7.23
Velocity Of Sound:5940
Youngs Modulus:279
Rigidity Modulus:115
Bulk Modulus:160
Poissons Ratio:0.21
Mineral Hardness:8.5
Brinell Hardness:1120
Vickers Hardness:1060
Electrical Resistivity:12.7
Melting Point:1907
Boiling Point:2671
Thermal Conductivity:94
Coefficient Of Linear Expansion:4.9
Enthalpy Of Fusion:20.5
Enthalpy Of Vaporization:339
Enthalpy Of Atmization:397
Most Common Oxidation Numbers:6,3
Color:Silvery metallic
Discovered By:Louis-Nicholas Vauquelin
Discovered At:France
Discovered When:1797
Origin Of Name:From the Greek word chroma meaning colour, named for the many coloured compounds known for chromium.

Calculate the molecular weight of Chromium or molecular weight Cr.

Also see the full list of chemical elements and atomic weights.

››Compounds that contain Chromium

Barium Chromate  BaCrO4
Caesium Chromate  Cs2CrO4
Chromic Acid  H2CrO4
Chromyl Chloride  CrO2Cl2
Silver Chromate  Ag2CrO4
Silver Dichromate  Ag2Cr2O7
Barium Dichromate  Ba3(CrO4)2
Calcium Chromate  CaCrO4
Cadmium Chromate  CdCrO4
Cobalt(II) Chromate  CoCrO4
Cobalt(II) Chromite  CoCr2O4
Chromium(II) Bromide  CrBr2
Chromium(III) Bromide  CrBr3
Chromium(IV) Bromide  CrBr4
Chromium(III) Picolinate  Cr(C6H4NO2)3
Chromium(VI) Carbonyl  Cr(CO)6
Chromium(II) Chloride  CrCl2
Chromium(III) Chloride  CrCl3
Chromium(IV) Chloride  CrCl4
Chromium(II) Fluoride  CrF2
Chromium(III) Fluoride  CrF3
Chromium(IV) Fluoride  CrF4
Chromium(V) Fluoride  CrF5
Chromium(VI) Fluoride  CrF6
Chromium(II) Iodide  CrI2
Chromium(III) Iodide  CrI3
Chromium(IV) Iodide  CrI4
Chromium(III) Nitride  CrN
Chromium(III) Nitrate  Cr(NO3)3
Chromium(IV) Oxide  CrO2
Chromium(III) Phosphate  CrPO4
Chromium(II) Selenide  CrSe
Chromium(III) Oxide  Cr2O3
Chromium(III) Sulfate  Cr2(SO4)3
Chromium(III) Sulfide  Cr2S3
Chromium(III) Telluride  Cr2Te3
Chromium(II) Carbide  Cr3C2
Chromium(II, III) Oxide  Cr3O4
Copper(II) Chromate  CuCrO4
Iron Chromite  FeCr2O4
Iron(III) Chromate  Fe2(CrO4)3
Iron(III) Dichromate  Fe2(Cr2O7)3
Potassium Chromate  K2CrO4
Potassium Dichromate  K2Cr2O7
Sodium Chromate  Na2CrO4
Nickel(II) Chromate  NiCrO4
Lead(II) Chromate  PbCrO4
Strontium Chromate  SrCrO4
Zinc Chromate  ZnCrO4
Zinc Chromite  ZnCr2O4
Zinc Dichromate  ZnCr2O7
Chromium(II) Acetate  Cr2(OAc)4(H2O)2
Sodium Dichromate  Na2Cr2O7
Chromium(II) Nitrate  Cr(NO3)2