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< Back Dubnium  SEE PERIODIC TABLE   SEE FULL ARTICLE Atomic Number 105 Atomic Symbol Db Atomic Weight [262 amu] Group Transition, 5 Ground State Electron Configuration 5f14 6s2 6p6 6d3 7s2 Selected Radioisotopes 260Db, 261Db Discovered by Researchers at C, 1967. Also, Ghiorso, Nurma; Harris; K. A. Y. Eskola; P. L. Eskola, 1970

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