element types of magnesium oxide

magnesium oxide | element types

magnesium | oxygen

Periodic table location

Images

| magnesium | oxygen atomic symbol | Mg | O atomic number | 12 | 8 short electronic configuration | [Ne]3s^2 | [He]2s^22p^4 Aufbau diagram | 3s | 2p 2s block | s | p group | 2 | 16 period | 3 | 2 atomic mass | 24.305 u | 15.999 u half-life | (stable) | (stable)

| magnesium | oxygen phase at STP | solid | gas melting point | 650 °C | -218.3 °C boiling point | 1090 °C | -182.9 °C critical temperature | (unknown) | 154.59 K critical pressure | (unknown) | 5.043 MPa molar heat of fusion | 8.7 kJ/mol | 0.222 kJ/mol molar heat of vaporization | 128 kJ/mol | 3.41 kJ/mol specific heat at STP | 1020 J/(kg K) | 919 J/(kg K) adiabatic index | | 7/5 (properties at standard conditions)

| magnesium | oxygen density | 1.738 g/cm^3 | 0.001429 g/cm^3 liquid density | 1.584 g/cm^3 | molar volume | 13.98 cm^3/mol | 11200 cm^3/mol Mohs hardness | 2.5 (between gypsum and calcite) | Brinell hardness | 260 MPa | bulk modulus | 45 GPa | shear modulus | 17 GPa | Young's modulus | 45 GPa | Poisson ratio | 0.29 | refractive index | (unknown) | 1.000271 sound speed | 4602 m/s | 317.5 m/s thermal expansion | 2.5×10^-5 K^(-1) | thermal conductivity | 160 W/(m K) | 0.02658 W/(m K) (properties at standard conditions)

| magnesium | oxygen electrical type | conductor | resistivity | 4.4×10^-8 Ω m (ohm meters) | electrical conductivity | 2.3×10^7 S/m (siemens per meter) | magnetic type | paramagnetic | paramagnetic volume magnetic susceptibility | 1.2×10^-5 | 1.90772×10^-6 mass magnetic susceptibility | 6.9×10^-9 m^3/kg (cubic meters per kilogram) | 1.335×10^-6 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.68×10^-10 m^3/mol (cubic meters per mole) | 4.27184×10^-8 m^3/mol (cubic meters per mole) work function | 3.66 eV (Polycrystalline) | threshold frequency | 8.85×10^14 Hz (hertz) | color | (silver) | (colorless) refractive index | (unknown) | 1.000271

| magnesium | oxygen valence | 2 | 2 electronegativity | 1.31 | 3.44 electron affinity | 0 kJ/mol (kilojoules per mole) | 141 kJ/mol (kilojoules per mole) first ionization energy | 737.7 kJ/mol (kilojoules per mole) | 1313.9 kJ/mol (kilojoules per mole) ionization energies | 737.7 kJ/mol | 1450.7 kJ/mol | 7732.7 kJ/mol | 10542.5 kJ/mol | 13630 kJ/mol | 18020 kJ/mol | 21711 kJ/mol | 25661 kJ/mol | 31653 kJ/mol | 35458 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

| magnesium | oxygen term symbol | ^1S_0 | ^3P_2 atomic radius | 150 pm | 60 pm covalent radius | 141 pm | 66 pm van der Waals radius | 173 pm | 152 pm (electronic ground state properties)

| magnesium | oxygen universe abundance | 0.06 mass% | 1 mass% solar abundance | 0.07 mass% | 0.9 mass% meteorite abundance | 12 mass% | 40 mass% crust abundance | 2.9 mass% | 46 mass% ocean abundance | 0.13 mass% | 86 mass% human abundance | 0.027 mass% | 61 mass% universe molar abundance | 0.003 mol% | 0.08 mol% solar molar abundance | 0.003 mol% | 0.07 mol% meteorite molar abundance | 10 mol% | 48 mol% ocean molar abundance | 0.034 mol% | 33 mol% crust molar abundance | 2.5 mol% | 60 mol% human molar abundance | 0.007 mol% | 24 mol%

| magnesium | oxygen half-life | (stable) | (stable) stable isotopes | Mg-24 (78.99%) | Mg-26 (11.01%) | Mg-25 (10%) | O-16 (99.762%) | O-18 (0.2%) | O-17 (3.8×10^-4) nuclear spin | Mg-19: 1/2^- | Mg-20: 0^+ | Mg-21: 5/2^+ | Mg-22: 0^+ | Mg-23: 3/2^+ | Mg-24: 0^+ | Mg-25: 5/2^+ | Mg-26: 0^+ | Mg-27: 1/2^+ | Mg-28: 0^+ | Mg-29: 3/2^+ | Mg-30: 0^+ | Mg-31: 1/2^+ | Mg-32: 0^+ | Mg-33: 3/2^+ | Mg-34: 0^+ | Mg-35: 7/2^- | Mg-36: 0^+ | Mg-37: 7/2^- | Mg-38: 0^+ | Mg-39: 7/2^- | Mg-40: 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 | Mg-28 (20.915 h) | Mg-27 (9.458 min) | Mg-23 (11.317 s) | Mg-22 (3.8755 s) | Mg-29 (1.3 s) | Mg-30 (335 ms) | Mg-31 (232 ms) | Mg-21 (122 ms) | Mg-33 (90.5 ms) | Mg-20 (90 ms) | Mg-32 (86 ms) | Mg-35 (70 ms) | Mg-34 (20 ms) | Mg-36 (3.9 ms) | Mg-38 (260 ns) | Mg-37 (260 ns) | Mg-39 (180 ns) | Mg-40 (170 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 | 0.063 b | 2.8×10^-4 b neutron mass absorption | 1×10^-4 m^2/kg | 1×10^-6 m^2/kg

| magnesium | oxygen CAS number | 7439-95-4 | 7782-44-7 PubChem CID number | 5462224 | 977