Input interpretation
chromium (chemical element)
Periodic table location
Periodic table location
Image
Image
Basic elemental properties
![atomic symbol | Cr atomic number | 24 short electronic configuration | [Ar]4s^13d^5 Aufbau diagram | 3d 4s block | d group | 6 period | 4 atomic mass | 51.9961 u (unified atomic mass units)](../image_source/934006ed01485d510a6d52b5f250e58c.png)
atomic symbol | Cr atomic number | 24 short electronic configuration | [Ar]4s^13d^5 Aufbau diagram | 3d 4s block | d group | 6 period | 4 atomic mass | 51.9961 u (unified atomic mass units)
Thermodynamic properties
phase at STP | solid melting point | 1907 °C (rank: 15th) boiling point | 2671 °C (rank: 44th) molar heat of fusion | 20.5 kJ/mol (rank: 20th) molar heat of vaporization | 339 kJ/mol (rank: 31st) specific heat at STP | 448 J/(kg K) (rank: 27th) Néel point | 393 K (properties at standard conditions)
Material properties
density | 7.19 g/cm^3 (rank: 48th) liquid density | 6.3 g/cm^3 molar volume | 7.232 cm^3/mol Mohs hardness | 8.5 (between topaz and corundum) Vickers hardness | 1060 MPa (rank: 17th) Brinell hardness | 1120 MPa (rank: 12th) bulk modulus | 160 GPa (rank: 16th) shear modulus | 115 GPa Young's modulus | 279 GPa (rank: 7th) Poisson ratio | 0.21 (rank: 49th) sound speed | 5940 m/s (rank: 7th) thermal expansion | 4.9×10^-6 K^(-1) (rank: 61st) thermal conductivity | 94 W/(m K) (rank: 20th) (properties at standard conditions)
Electromagnetic properties
electrical type | conductor resistivity | 1.3×10^-7 Ω m (ohm meters) electrical conductivity | 7.9×10^6 S/m (siemens per meter) magnetic type | antiferromagnetic volume magnetic susceptibility | 3.177×10^-4 mass magnetic susceptibility | 4.45×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 2.314×10^-9 m^3/mol (cubic meters per mole) Néel point | 393 K (kelvins) work function | 4.5 eV (Polycrystalline) threshold frequency | 1.088×10^15 Hz (hertz) color | (silver)
Reactivity
valence | 6 electronegativity | 1.66 electron affinity | 64.3 kJ/mol (kilojoules per mole) first ionization energy | 652.9 kJ/mol (kilojoules per mole) ionization energies | 652.9 kJ/mol | 1590.6 kJ/mol | 2987 kJ/mol | 4743 kJ/mol | 6702 kJ/mol | 8744.9 kJ/mol | 15455 kJ/mol | 17820 kJ/mol | 20190 kJ/mol | 23580 kJ/mol | 26130 kJ/mol | 28750 kJ/mol | 34230 kJ/mol | 37066 kJ/mol | 97510 kJ/mol | 105800 kJ/mol | 114300 kJ/mol | 125300 kJ/mol | 134700 kJ/mol | 144300 kJ/mol | 157700 kJ/mol
Reactivity