Element Properties
By Name
By Atomic Number
By Density
Melting & Boiling Point
Electron Configuration
Radioactive Elements
Noble & Precious Metals
Periodic Table
Groups
Periodic Table
Alkali Metals
Alkaline Earth Metals
Halogens
Noble (Inert) Gases
Rare Earth Elements
Transition Metals
Metalloids (Semimetals)
Nonmetals
Poor Metals
Materials
Toxic Substances
Semiconductor Materials
Vitamins
Amino Acids
Inventions
& Patents
Reference
|
Dubnium
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Db | 105 | 262 | Unknown | Unknown | Solid | Unknown | Metal  |
|
|
|
| General |
| Name, Symbol, Number |
dubnium, Db, 105 |
| Chemical series |
transition metals |
| Group, Period, Block |
5, 7, d |
| Appearance |
unknown, probably silvery
white or metallic gray |
| Standard atomic weight |
(268) g·mol−1 |
| Electron configuration |
perhaps [Rn] 5f14 6d3 7s2
(guess based on tantalum) |
| Electrons per shell |
2, 8, 18, 32, 32, 11, 2 |
| Physical properties |
| Phase |
presumably a solid |
| Miscellaneous |
| CAS registry number |
53850-35-4 |
| Selected isotopes |
|
|
| References |
|
Dubnium Compounds
|
Source: Wikipedia article Dubnium
|
|
Chemistry Quick Facts