Answer | Crossword Clue |
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positronium | a positron and and an electron bound together in a short-lived unit, similar to a hydrogen atom |
positroniums | POSITRONIUM, a positron and and an electron bound together in a short-lived unit, similar to a hydrogen atom |
muonium | electron and a positively charged muon bound together by electrical attraction in the same manner as the electron and proton in a hydrogen atom |
muoniums | electron and a positively charged muon bound together by electrical attraction in the same manner as the electron and proton in a hydrogen atom |