element types of iron(III) oxide

iron(III) oxide | element types

iron | oxygen

Periodic table location

Images

| iron | oxygen atomic symbol | Fe | O atomic number | 26 | 8 short electronic configuration | [Ar]4s^23d^6 | [He]2s^22p^4 Aufbau diagram | 3d 4s | 2p 2s block | d | p group | 8 | 16 period | 4 | 2 atomic mass | 55.845 u | 15.999 u half-life | (stable) | (stable)

| iron | oxygen phase at STP | solid | gas melting point | 1538 °C | -218.3 °C boiling point | 2861 °C | -182.9 °C critical temperature | (unknown) | 154.59 K critical pressure | (unknown) | 5.043 MPa molar heat of fusion | 13.8 kJ/mol | 0.222 kJ/mol molar heat of vaporization | 347 kJ/mol | 3.41 kJ/mol specific heat at STP | 449 J/(kg K) | 919 J/(kg K) adiabatic index | | 7/5 (properties at standard conditions)

| iron | oxygen density | 7.874 g/cm^3 | 0.001429 g/cm^3 liquid density | 6.98 g/cm^3 | molar volume | 7.092 cm^3/mol | 11200 cm^3/mol Mohs hardness | 4 (≈ fluorite) | Vickers hardness | 608 MPa | Brinell hardness | 490 MPa | bulk modulus | 170 GPa | shear modulus | 82 GPa | Young's modulus | 211 GPa | Poisson ratio | 0.29 | tensile yield strength | 50 MPa | refractive index | (unknown) | 1.000271 sound speed | 4910 m/s | 317.5 m/s thermal expansion | 1.18×10^-5 K^(-1) | thermal conductivity | 80 W/(m K) | 0.02658 W/(m K) (properties at standard conditions)

| iron | oxygen electrical type | conductor | resistivity | 9.7×10^-8 Ω m (ohm meters) | electrical conductivity | 1×10^7 S/m (siemens per meter) | magnetic type | ferromagnetic | paramagnetic volume magnetic susceptibility | | 1.90772×10^-6 mass magnetic susceptibility | | 1.335×10^-6 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | | 4.27184×10^-8 m^3/mol (cubic meters per mole) Curie point | 1043 K (kelvins) | work function | (4.67 to 4.81) eV | threshold frequency | (1.129×10^15 to 1.163×10^15) Hz (hertz) | color | (gray) | (colorless) refractive index | (unknown) | 1.000271

| iron | oxygen valence | 3 | 2 electronegativity | 1.83 | 3.44 electron affinity | 15.7 kJ/mol (kilojoules per mole) | 141 kJ/mol (kilojoules per mole) first ionization energy | 762.5 kJ/mol (kilojoules per mole) | 1313.9 kJ/mol (kilojoules per mole) ionization energies | 762.5 kJ/mol | 1561.9 kJ/mol | 2957 kJ/mol | 5290 kJ/mol | 7240 kJ/mol | 9560 kJ/mol | 12060 kJ/mol | 14580 kJ/mol | 22540 kJ/mol | 25290 kJ/mol | 28000 kJ/mol | 31920 kJ/mol | 34830 kJ/mol | 37840 kJ/mol | 44100 kJ/mol | 47206 kJ/mol | 122200 kJ/mol | 131000 kJ/mol | 140500 kJ/mol | 152600 kJ/mol | 163000 kJ/mol | 1313.9 kJ/mol | 3388.3 kJ/mol | 5300.5 kJ/mol | 7469.2 kJ/mol | 10989.5 kJ/mol | 13326.5 kJ/mol | 71330 kJ/mol | 84078 kJ/mol

Reactivity

| iron | oxygen term symbol | ^5D_4 | ^3P_2 atomic radius | 140 pm | 60 pm covalent radius | 132 pm | 66 pm van der Waals radius | (unknown) | 152 pm (electronic ground state properties)

| iron | oxygen universe abundance | 0.11 mass% | 1 mass% solar abundance | 0.1 mass% | 0.9 mass% meteorite abundance | 22 mass% | 40 mass% crust abundance | 6.3 mass% | 46 mass% ocean abundance | 3×10^-7 mass% | 86 mass% human abundance | 0.006 mass% | 61 mass% universe molar abundance | 0.002 mol% | 0.08 mol% solar molar abundance | 0.003 mol% | 0.07 mol% meteorite molar abundance | 7.8 mol% | 48 mol% ocean molar abundance | 3.3×10^-8 mol% | 33 mol% crust molar abundance | 2.3 mol% | 60 mol% human molar abundance | 6.7×10^-4 mol% | 24 mol%

| iron | oxygen half-life | (stable) | (stable) stable isotopes | Fe-56 (91.754%) | Fe-54 (5.845%) | Fe-57 (2.119%) | Fe-58 (0.282%) | O-16 (99.762%) | O-18 (0.2%) | O-17 (3.8×10^-4) nuclear spin | Fe-45: 3/2^+ | Fe-46: 0^+ | Fe-47: 7/2^- | Fe-48: 0^+ | Fe-49: 7/2^- | Fe-50: 0^+ | Fe-51: 5/2^- | Fe-52: 0^+ | Fe-53: 7/2^- | Fe-54: 0^+ | Fe-55: 3/2^- | Fe-56: 0^+ | Fe-57: 1/2^- | Fe-58: 0^+ | Fe-59: 3/2^- | Fe-60: 0^+ | Fe-62: 0^+ | Fe-63: 5/2^- | Fe-64: 0^+ | Fe-65: 1/2^- | Fe-66: 0^+ | Fe-67: 5/2^+ | Fe-68: 0^+ | Fe-69: 1/2^- | Fe-70: 0^+ | Fe-71: 7/2^+ | Fe-72: 0^+ | O-12: 0^+ | O-13: 3/2^- | O-14: 0^+ | O-15: 1/2^- | O-16: 0^+ | O-17: 5/2^+ | O-18: 0^+ | O-19: 5/2^+ | O-20: 0^+ | O-21: 5/2^+ | O-22: 0^+ | O-23: 1/2^+ | O-24: 0^+ | O-25: 3/2^+ | O-26: 0^+ | O-27: 3/2^+ | O-28: 0^+ unstable isotopes | Fe-60 (2.6 Myr) | Fe-55 (2.737 yr) | Fe-59 (44.495 days) | Fe-52 (8.275 h) | Fe-53 (8.52 min) | Fe-61 (5.98 min) | Fe-62 (68 s) | Fe-63 (6.1 s) | Fe-64 (2 s) | Fe-65 (1.3 s) | Fe-67 (600 ms) | Fe-66 (440 ms) | Fe-51 (305 ms) | Fe-68 (187 ms) | Fe-50 (155 ms) | Fe-69 (109 ms) | Fe-70 (94 ms) | Fe-49 (64.7 ms) | Fe-48 (44 ms) | Fe-47 (21.8 ms) | Fe-46 (12 ms) | Fe-45 (1.89 ms) | Fe-72 (150 ns) | Fe-71 (150 ns) | O-15 (122.24 s) | O-14 (70.606 s) | O-19 (26.88 s) | O-20 (13.51 s) | O-21 (3.42 s) | O-22 (2.25 s) | O-23 (82 ms) | O-24 (65 ms) | O-13 (8.58 ms) | O-27 (260 ns) | O-28 (100 ns) | O-25 (50 ns) | O-26 (40 ns) | O-12 (1.14 zs) neutron cross-section | 2.56 b | 2.8×10^-4 b neutron mass absorption | 0.0015 m^2/kg | 1×10^-6 m^2/kg

| iron | oxygen CAS number | 7439-89-6 | 7782-44-7 PubChem CID number | 23925 | 977