element types of chromium carbide

chromium carbide | element types

carbon | chromium

Periodic table location

Images

| carbon | chromium atomic symbol | C | Cr atomic number | 6 | 24 short electronic configuration | [He]2s^22p^2 | [Ar]4s^13d^5 Aufbau diagram | 2p 2s | 3d 4s block | p | d group | 14 | 6 period | 2 | 4 atomic mass | 12.011 u | 51.9961 u half-life | (stable) | (stable)

| carbon | chromium phase at STP | solid | solid melting point | 3550 °C | 1907 °C boiling point | 4027 °C | 2671 °C molar heat of fusion | 105 kJ/mol | 20.5 kJ/mol molar heat of vaporization | 715 kJ/mol | 339 kJ/mol specific heat at STP | 710 J/(kg K) | 448 J/(kg K) Néel point | | 393 K (properties at standard conditions)

| carbon | chromium density | 2.26 g/cm^3 | 7.19 g/cm^3 liquid density | | 6.3 g/cm^3 molar volume | 5.315 cm^3/mol | 7.232 cm^3/mol Mohs hardness | 0.5 (between talc and gypsum) | 8.5 (between topaz and corundum) Vickers hardness | | 1060 MPa Brinell hardness | | 1120 MPa bulk modulus | 33 GPa | 160 GPa shear modulus | | 115 GPa Young's modulus | | 279 GPa Poisson ratio | | 0.21 refractive index | 2.417 | sound speed | 18350 m/s | 5940 m/s thermal expansion | 7.1×10^-6 K^(-1) | 4.9×10^-6 K^(-1) thermal conductivity | 140 W/(m K) | 94 W/(m K) (properties at standard conditions)

| carbon | chromium electrical type | conductor | conductor resistivity | 1×10^-5 Ω m (ohm meters) | 1.3×10^-7 Ω m (ohm meters) electrical conductivity | 100000 S/m (siemens per meter) | 7.9×10^6 S/m (siemens per meter) magnetic type | diamagnetic | antiferromagnetic volume magnetic susceptibility | -1.4×10^-5 | 3.177×10^-4 mass magnetic susceptibility | -6.2×10^-9 m^3/kg (cubic meters per kilogram) | 4.45×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -7.45×10^-11 m^3/mol (cubic meters per mole) | 2.314×10^-9 m^3/mol (cubic meters per mole) Néel point | | 393 K (kelvins) work function | 5 eV (Polycrystalline) | 4.5 eV (Polycrystalline) threshold frequency | 1.209×10^15 Hz (hertz) | 1.088×10^15 Hz (hertz) color | (black) | (silver) refractive index | 2.417 |

| carbon | chromium valence | 4 | 6 electronegativity | 2.55 | 1.66 electron affinity | 153.9 kJ/mol (kilojoules per mole) | 64.3 kJ/mol (kilojoules per mole) first ionization energy | 1086.5 kJ/mol (kilojoules per mole) | 652.9 kJ/mol (kilojoules per mole) ionization energies | 1086.5 kJ/mol | 2352.6 kJ/mol | 4620.5 kJ/mol | 6222.7 kJ/mol | 37831 kJ/mol | 47277 kJ/mol | 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

| carbon | chromium term symbol | ^3P_0 | ^7S_3 atomic radius | 70 pm | 140 pm covalent radius | 76 pm | 139 pm van der Waals radius | 170 pm | (electronic ground state properties)

| carbon | chromium universe abundance | 0.5 mass% | 0.0015 mass% solar abundance | 0.3 mass% | 0.002 mass% meteorite abundance | 1.5 mass% | 0.3 mass% crust abundance | 0.18 mass% | 0.014 mass% ocean abundance | 0.0028 mass% | 6×10^-8 mass% human abundance | 23 mass% | 3×10^-6 mass% universe molar abundance | 0.05 mol% | 4×10^-5 mol% solar molar abundance | 0.03 mol% | 4×10^-5 mol% meteorite molar abundance | 1.8 mol% | 0.12 mol% ocean molar abundance | 0.0014 mol% | 7.1×10^-9 mol% crust molar abundance | 0.31 mol% | 0.0055 mol% human molar abundance | 12 mol% | 4×10^-7 mol%

| carbon | chromium half-life | (stable) | (stable) stable isotopes | C-12 (98.89%) | C-13 (1.11%) | Cr-52 (83.789%) | Cr-53 (9.501%) | Cr-50 (4.345%) | Cr-54 (2.365%) nuclear spin | C-8: 0^+ | C-9: 3/2^- | C-10: 0^+ | C-11: 3/2^- | C-12: 0^+ | C-13: 1/2^- | C-14: 0^+ | C-15: 1/2^+ | C-16: 0^+ | C-17: 3/2^+ | C-18: 0^+ | C-19: 1/2^+ | C-20: 0^+ | C-21: 1/2^+ | C-22: 0^+ | Cr-42: 0^+ | Cr-43: 3/2^+ | Cr-44: 0^+ | Cr-45: 7/2^- | Cr-46: 0^+ | Cr-47: 3/2^- | Cr-48: 0^+ | Cr-49: 5/2^- | Cr-50: 0^+ | Cr-51: 7/2^- | Cr-52: 0^+ | Cr-53: 3/2^- | Cr-54: 0^+ | Cr-55: 3/2^- | Cr-56: 0^+ | Cr-58: 0^+ | Cr-59: 1/2^- | Cr-60: 0^+ | Cr-61: 5/2^- | Cr-62: 0^+ | Cr-63: 1/2^- | Cr-64: 0^+ | Cr-65: 1/2^- | Cr-66: 0^+ | Cr-67: 1/2^- unstable isotopes | C-14 (5700 yr) | C-11 (20.334 min) | C-10 (19.29 s) | C-15 (2.449 s) | C-16 (747 ms) | C-17 (193 ms) | C-9 (126.5 ms) | C-18 (92 ms) | C-19 (49 ms) | C-20 (14 ms) | C-22 (6.2 ms) | C-21 (30 ns) | C-8 (2 zs) | Cr-51 (27.703 days) | Cr-48 (21.561 h) | Cr-49 (42.33 min) | Cr-56 (5.93 min) | Cr-55 (209.8 s) | Cr-57 (21.1 s) | Cr-58 (7 s) | Cr-60 (570 ms) | Cr-47 (500 ms) | Cr-59 (460 ms) | Cr-61 (270 ms) | Cr-46 (260 ms) | Cr-62 (190 ms) | Cr-63 (129 ms) | Cr-45 (60.9 ms) | Cr-44 (53 ms) | Cr-64 (43 ms) | Cr-65 (27 ms) | Cr-43 (21.6 ms) | Cr-42 (13 ms) | Cr-67 (10 ms) | Cr-66 (10 ms) neutron cross-section | 0.0035 b | 3.1 b neutron mass absorption | 1.5×10^-5 m^2/kg | 0.0021 m^2/kg

| carbon | chromium CAS number | 7440-44-0 | 7440-47-3 PubChem CID number | | 23976