PERIODIC TABLE

Magnesium

Atomic No. 12 Mg Magnesium

About Magnesium

Magnesium is an alkaline earth metal with atomic number 12 that generally forms compounds in the +2 oxidation state. Its low density supports lightweight alloy applications, while magnesium oxide is used in refractory materials and magnesium fluoride in optical components. Magnesium aluminate spinel combines mechanical durability with useful optical transmission when processed into dense, transparent ceramics, supporting applications in protective windows and infrared optics.

Properties

Atomic Number
12
Atomic Symbol
Mg
Atomic Mass
24.305
CAS No.
7439-95-4
Density
1.738 g/cm³
Series
alkaline earth metal
Melting Point
650°C
Boiling Point
1,090°C
Thermal Conductivity
1.6 W/cm °C
Heat of Fusion
8.7 kJ/mol
Heat of Vaporization
128 kJ/mol
Electronegativity
1.31 pauling
Crystal Structure
Hexagonal
Electrical Conductivity
2.3×107 S/m

Magnesium Products

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