A
muonium particle is an
exotic atom made up of a positive
muon and an
electron, and is given the symbol Mu or μ
+e
–. During the muon's 2
microsecond lifetime, muonium can enter into compounds such as muonium chloride (MuCl) or sodium muonide (NaMu)
[1] (
http://www.iupac.org/publications/pac/2001/pdf/7302x0377.pdf).
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