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Atomic Number	12

Atomic Symbol	Mg

Atomic Weight	24.305 amu

Group	Alkaline Earth, 2

Form	Solid

Density @ STP	1.74 g/cm³

Melting Point	650 °C (1202 °F, 923.2 °K)

Boiling Point	1090 °C (1994 °F,1363.2 °K)

Heat of Fusion	8.48 kJ/mol

Heat of Vaporization	128 kJ/mol

First Ionization Potential	7.64624 eV

Electronegativity (on Pauling scale	1.31

Specific Heat Capacity	1.023 J/g K

Ground State Electron Configuration	3s²

Oxidation State(s)	+2

Stable Isotopes and Natural Abundance on Earth	²⁴Mg, 78.99%; ²⁵Mg, 10.00%; ²⁶Mg, 11.01%

Atomic Radius	145 pm

Crystal Structure	Hexagonal

Discovered by	Black, 1755