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Also known as element 12, 12Mg

Magnesium is a chemical element; it has symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point, and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic table), it occurs naturally only in combination with other elements and almost always has an oxidation state of +2. It reacts readily with air to form a thin passivation coating of magnesium oxide that inhibits further corrosion of the metal. The free metal burns with a brilliant-white light. The metal is obtained mainly by electrolysis of magnesium salts obtained fro

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Magnesium is a chemical element with the symbol Mg and atomic number 12. It has a standard atomic mass of 24.305 and typically exhibits an oxidation state of 2. The element’s electron configuration is described as 1s² 2s² 2p⁶ 3s² or [Ne] 3s². Its ionic radius measures 0.89, and it has an electronegativity of 1.

Magnesium melts at 649 degrees and boils at 1100 degrees. It possesses an electrical conductivity of 21,500,000 and a standard molar entropy of 32.7. The substance was discovered in 1755. In chemical databases, it is identified by the InChIKey FYYHWMGAXLPEAU-UHFFFAOYSA-N and has a topological polar surface area of 0. It is referenced by 4,738 other encyclopedia articles.

Synthesized by Vinony from 29 facts across 4 sources: Wikidata, PubMed, PubChem, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.