Jisho

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同位体
Wikipedia definition
1. Isotopes of magnesiumMagnesium (Mg) naturally occurs in three stable isotopes, Mg, Mg, and Mg. 19 radioisotopes have been discovered, ranging from Mg to Mg. The longest-lived radioisotope is Mg with a half-life of 20.915 hours. The lighter isotopes mostly decay to isotopes of sodium while the heavier isotopes decay to isotopes of aluminium. The shortest-lived is Mg with a half-life shorter than 180 nanoseconds, or rarely Mg, with a half-life longer than 170 nanoseconds (the half-life of Mg is unknown).
Read “Isotopes of magnesium” on English Wikipedia
Read “マグネシウムの同位体” on Japanese Wikipedia
Read “Isotopes of magnesium” on DBpedia

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