Magnesium | |
Electrons per shell | 2,8,2 |
Electron Configuration | [Ne] 3s2 |
Ground state | 1S0 |
Atomic Volume | 13.97 cm3 mol-1 |
Electronegativity | 1.31 |
Magnetic ordering | Paramagnetic |
Mass magnetic susceptibility | 6.9 x 10-9 |
Molar magnetic susceptibility | 1.68 x 10-10 |
Speed of sound | 4940 m s-1 |
Thermal Properties | |
Enthalpy of Atomization | 148.5 kJ mol-1 @25°C |
Enthalpy of Fusion | 9.04 kJ mol-1 |
Enthalpy of Vaporisation | 127.6 kJ mol-1 |
Heat Capacity | 24.869 J mol-1 K-1 |
Thermal Conductivity | 156 W m-1 K-1 |
Thermal Expansion | 24.8 μm m-1 K-1 |
Hardness | |
Brinell hardness | 260 MPa |
Mohs hardness | 2.5 |
Elastic Properties | |
Bulk modulus | 45 GPa |
Poisson ratio | 0.29 |
Shear modulus | 17 GPa |
Young's modulus | 45 GPa |
Electrical Properties | |
Electrical resistivity | 4.4 x 10-7 Ω m |
Electrical conductivity | 0.226 106/cm Ω |
Chemical Properties | |
Electrochemical Equivalent | 0.45341 g Ah-1 |
Electron Work Function | 3.66 eV |
Valence Electron Potential (-eV) | 40 |
Ionization Potential | |
First | 7.646 |
Second | 15.035 |
Third | 80.143 |
Flammability | |
Flammable solid | |
Autoignition temp | 473°C |
Flashpoint | 634°C (cc) |
Energy Levels | |
Kα1 (intensity 100) | 1.2536 KeV |
Kα2 (intensity 0) | 1.2536 KeV |
Kβ1 (intensity 1) | 1.3022 KeV |
Atomic Radii | |
Empirical | 150 pm |
Bohr Radius | 145 pm |
Covalent Radius | 130 pm |
Van der Waals | 173 pm |
Triple covalent | 127 pm |
Metallic | 160 pm |
Oxidation States | |
Main | Mg+2 |
Other | |
Ionisation Energies (kJ mol-1) | |
M - M+ | 737.7 |
M+ - M2+ | 1450.7 |
M2+ - M3+ | 7732.6 |
M3+ - M4+ | 10540 |
M4+ - M5+ | 13630 |
M5+ - M6+ | 17995 |
M6+ - M7+ | 21703 |
M7+ - M8+ | 25656 |
M8+ - M9+ | 31642 |
M9+ - M10+ | 35461 |
Vapour Pressure | ||||||
P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
T (K) | 701 | 773 | 861 | 971 | 1132 | 1361 |
Crystal Structure | |
Structure | Hexagonal close packed |
a = 320.94 pm | |
b = 320.94 pm | |
c = 521.08 pm | |
α = 90° | |
β = 90° | |
γ = 120° |