Dubnium
Dubnium (Db) is a chemical element belonging to the category Transition metal, with atomic number 105 and atomic mass 268.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Dubnium
- Symbol: Db
- Atomic number: 105
- Atomic mass: 268.0000 u
Position in the periodic table
- Group: 5
- Period: 7
- Category: Transition metal
Physico-chemical properties
- Standard state: Solid (expected)
- Melting point: Unknown experimentally (predicted to be very high)
- Density: Unknown (predicted to be very high, around 21–22 g/cm³)
- Electron configuration: [Rn] 5f¹⁴ 6d³ 7s²
Scientific description
Dubnium is a synthetic chemical element with symbol Db and atomic number 105. It belongs to the category of Transition metal and occupies group 5 and period 7. Its standard atomic mass is taken as 268.0000 u, corresponding to its most stable known isotope.
KODO: R6