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De - Pt| English Dictionary: Unnilseptium | by the DICT Development Group |
| 1 result for Unnilseptium | |
| From The Elements (22Oct97) [elements]: | |
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unnilseptium Symbol: Atomic number: 107 Atomic weight: (262) Radioactive transition metal. Half-life of approximately 1/500 s. Discovered by the Joint Institute for Nuclear Research at Dubna (U.S.S.R.) in 1976. Confirmed by West German physicists at the Heavy Ion Research Laboratory at Darmstadt. | |
