Dubnium (Db) — Transition metal. Atomic number 105.
Synthetic radioactive metal
- Atomic number: 105
- Symbol: Db
- Atomic mass: [268] u
- Category: Transition metal
- State: Solid
- Electron configuration: [Rn] 5f14 6d3 7s2
- Oxidation states: +5
- Discovered by: Joint Institute for Nuclear Research; Lawrence Berkeley Laboratory (1967)
Common uses: Scientific research only
Biological role: No biological role.
Frequently Asked Questions about Dubnium
What is the atomic number of dubnium?
Dubnium has an atomic number of 105, meaning each atom contains 105 protons in its nucleus.
What is the atomic mass of dubnium?
The standard atomic weight of dubnium is [268] u (unified atomic mass units).
What category does dubnium belong to?
Dubnium is classified as a transition metal.
What is the state of dubnium at room temperature?
Dubnium is a solid at 20 °C (68 °F).
What is the electron configuration of dubnium?
The electron configuration of dubnium is [Rn] 5f14 6d3 7s2.
What are the common oxidation states of dubnium?
Dubnium commonly exhibits the following oxidation states: +5.
When was dubnium discovered?
Dubnium was discovered in 1967 by Joint Institute for Nuclear Research; Lawrence Berkeley Laboratory.
Is dubnium radioactive?
Dubnium is a synthetic radioactive element that does not occur naturally and must be produced in a laboratory.
What is the biological role of dubnium?
No biological role.
What are the common uses of dubnium?
Dubnium is used for: Scientific research only.
