mg_periodic_table

Elemental properties

symbol        | Mg
atomic number | 12
atomic mass   | 24.305 u (unified atomic mass units)

Thermodynamic properties

phase at STP  | solid
melting point | 650 °C (rank: 66th)
boiling point | 1090 °C (rank: 68th)
(properties at standard conditions)

Material properties

density              | 1.738 g/cm^3 (rank: 80th)
Mohs hardness        | 2.5 (between gypsum and calcite)
Young's modulus      | 45 GPa (rank: 44th)
sound speed          | 4602 m/s (rank: 19th)
thermal expansion    | 2.5×10^-5 K^(-1) (rank: 12th)
thermal conductivity | 160 W/(m K) (rank: 8th)
(properties at standard conditions)

Electromagnetic properties

electrical type     | conductor
resistivity         | 4.4×10^-8 Ω m (ohm meters)
magnetic type       | paramagnetic
color               | (silver)

Atomic properties

term symbol   | ^1S_0
atomic radius | 150 pm
(electronic ground state properties)

Nuclear properties

half-life          | (stable)
stable isotopes    | Mg-24 (78.99%) | ...
unstable isotopes  | Mg-28 (20.915 h) | ...

Reactivity

valence                 | 2
electronegativity       | 1.31
electron affinity       | 0 kJ/mol (kilojoules per mole)
first ionization energy | 737.7 kJ/mol (kilojoules per mole)

Abundances

universe abundance | 0.06 mass% (rank: 9th)
crust abundance    | 2.9 mass% (rank: 6th)
human abundance    | 0.027 mass% (rank: 11th)

Identifiers

CAS number         | 7439-95-4
PubChem CID number | 5462224

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