Periodic Table of the Elements: Dubnium
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| Atomic Number: | 105 |
| Atomic Symbol: | Db |
| Dubniumdubnium , artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 268; m.p., b.p., and sp. gr. unknown; valence +5. ..... Click the link for more information. | |
| Atomic Weight: | (268) |
| Electron Configuration: | 2 · 8 · 18 32 · 32 11 · 2 |