Input interpretation
magnesium (chemical element) | oxygen (chemical element) | rubidium (chemical element)
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
| magnesium | oxygen | rubidium atomic symbol | Mg | O | Rb atomic number | 12 | 8 | 37 short electronic configuration | [Ne]3s^2 | [He]2s^22p^4 | [Kr]5s^1 Aufbau diagram | 3s | 2p 2s | 5s block | s | p | s group | 2 | 16 | 1 period | 3 | 2 | 5 atomic mass | 24.305 u | 15.999 u | 85.4678 u half-life | (stable) | (stable) | (stable)
Thermodynamic properties
| magnesium | oxygen | rubidium phase at STP | solid | gas | solid melting point | 650 °C | -218.3 °C | 39.31 °C boiling point | 1090 °C | -182.9 °C | 688 °C critical temperature | (unknown) | 154.59 K | 2093 K critical pressure | (unknown) | 5.043 MPa | 16 MPa molar heat of fusion | 8.7 kJ/mol | 0.222 kJ/mol | 2.19 kJ/mol molar heat of vaporization | 128 kJ/mol | 3.41 kJ/mol | 72 kJ/mol specific heat at STP | 1020 J/(kg K) | 919 J/(kg K) | 364 J/(kg K) adiabatic index | | 7/5 | (properties at standard conditions)
Material properties
| magnesium | oxygen | rubidium density | 1.738 g/cm^3 | 0.001429 g/cm^3 | 1.532 g/cm^3 liquid density | 1.584 g/cm^3 | | 1.46 g/cm^3 molar volume | 13.98 cm^3/mol | 11200 cm^3/mol | 55.79 cm^3/mol Mohs hardness | 2.5 (between gypsum and calcite) | | 0.3 (between talc and gypsum) Brinell hardness | 260 MPa | | 0.216 MPa bulk modulus | 45 GPa | | 2.5 GPa shear modulus | 17 GPa | | Young's modulus | 45 GPa | | 2.4 GPa Poisson ratio | 0.29 | | refractive index | (unknown) | 1.000271 | sound speed | 4602 m/s | 317.5 m/s | 1300 m/s thermal expansion | 2.5×10^-5 K^(-1) | | thermal conductivity | 160 W/(m K) | 0.02658 W/(m K) | 58 W/(m K) (properties at standard conditions)
Electromagnetic properties
| magnesium | oxygen | rubidium electrical type | conductor | | conductor resistivity | 4.4×10^-8 Ω m (ohm meters) | | 1.2×10^-7 Ω m (ohm meters) electrical conductivity | 2.3×10^7 S/m (siemens per meter) | | 8.3×10^6 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic | paramagnetic volume magnetic susceptibility | 1.2×10^-5 | 1.90772×10^-6 | 3.98×10^-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) | 2.6×10^-9 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) | 2.22×10^-10 m^3/mol (cubic meters per mole) work function | 3.66 eV (Polycrystalline) | | 2.26 eV (Polycrystalline) threshold frequency | 8.85×10^14 Hz (hertz) | | 5.467×10^14 Hz (hertz) color | (silver) | (colorless) | (silver) refractive index | (unknown) | 1.000271 |
Reactivity
| magnesium | oxygen | rubidium valence | 2 | 2 | 1 electronegativity | 1.31 | 3.44 | 0.82 electron affinity | 0 kJ/mol (kilojoules per mole) | 141 kJ/mol (kilojoules per mole) | 46.9 kJ/mol (kilojoules per mole) first ionization energy | 737.7 kJ/mol (kilojoules per mole) | 1313.9 kJ/mol (kilojoules per mole) | 403 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 | 403 kJ/mol | 2633 kJ/mol | 3860 kJ/mol | 5080 kJ/mol | 6850 kJ/mol | 8140 kJ/mol | 9570 kJ/mol | 13120 kJ/mol | 14500 kJ/mol | 26740 kJ/mol
Reactivity
Atomic properties
| magnesium | oxygen | rubidium term symbol | ^1S_0 | ^3P_2 | ^2S_(1/2) atomic radius | 150 pm | 60 pm | 235 pm covalent radius | 141 pm | 66 pm | 220 pm van der Waals radius | 173 pm | 152 pm | (electronic ground state properties)
Abundances
| magnesium | oxygen | rubidium universe abundance | 0.06 mass% | 1 mass% | 1×10^-6 mass% solar abundance | 0.07 mass% | 0.9 mass% | 3×10^-6 mass% meteorite abundance | 12 mass% | 40 mass% | 3.2×10^-4 mass% crust abundance | 2.9 mass% | 46 mass% | 0.006 mass% ocean abundance | 0.13 mass% | 86 mass% | 1.2×10^-5 mass% human abundance | 0.027 mass% | 61 mass% | 4.6×10^-4 mass% universe molar abundance | 0.003 mol% | 0.08 mol% | 1×10^-8 mol% solar molar abundance | 0.003 mol% | 0.07 mol% | 4×10^-8 mol% meteorite molar abundance | 10 mol% | 48 mol% | 7.8×10^-5 mol% ocean molar abundance | 0.034 mol% | 33 mol% | 8.7×10^-7 mol% crust molar abundance | 2.5 mol% | 60 mol% | 0.0014 mol% human molar abundance | 0.007 mol% | 24 mol% | 3.4×10^-5 mol%