Periodic Table of the Elements: Magnesium

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Periodic Table of the Elements: Magnesium
Atomic Number:12
Atomic Symbol:Mg
 Magnesiummagnesium
, metallic chemical element; symbol Mg; at. no. 12; at. wt. 24.3050; m.p. about 648.8°C;; b.p. about 1,090°C;; sp. gr. 1.738 at 20°C;; valence +2. In 1808, Sir Humphry Davy discovered magnesium in its oxide, although it is not certain that he isolated the
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Atomic Weight:24.3050
Electron Configuration:2 · 8 · 2
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