Dubnium (Db)
Dubnium (Db, element 105) is a transition metal in group 5, period 7. Atomic mass 268, electron configuration [Rn] 5f¹⁴ 6d³ 7s², uses and facts.
About Dubnium
Dubnium is a transition metal with the symbol Db and atomic number 105. Its state at room temperature is not known, because too little of it has been made, and it sits in group 5, period 7 of the periodic table. Dubnium was discovered in 1968 by Joint Institute for Nuclear Research.
Dubnium key facts
- Atomic number: 105
- Symbol: Db
- Atomic mass: 268 u
- Category: transition metal
- Group: 5
- Period: 7
- State at room temperature: not known
- Electron configuration: [Rn] 5f¹⁴ 6d³ 7s²
- Electronegativity (Pauling): not assigned
- Melting point: not known
- Boiling point: not known
- Density: not known
- Common oxidation states: not known
Electron configuration
The electron configuration of dubnium is [Rn] 5f¹⁴ 6d³ 7s². The part in brackets is the noble gas core; the rest shows how the outer electrons fill their subshells.
Uses of dubnium
- Research only
Did you know?
Named after Dubna, Russia. Exists for only fractions of a second.
Other elements in group 5 and neighbours
Frequently asked questions
What is the atomic number of dubnium?
The atomic number of dubnium is 105, which means every dubnium atom has 105 protons.
What is the electron configuration of dubnium?
The electron configuration of dubnium is [Rn] 5f¹⁴ 6d³ 7s².
What group and period is dubnium in?
Dubnium is a transition metal in group 5, period 7.
What state is dubnium at room temperature?
The state of dubnium at room temperature is not known, because too little of it has been made.
What is dubnium used for?
Dubnium is used for research only.