Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Dubnium exhibits chemical reactivity characteristic of the transition metal family, governed by an electronegativity of n/a and standard valence interactions.
Z = 105Transition Metal
Launch 3D Atom & Orbitals LabDubnium
Db
Standard Atomic Mass: 268 u
Period 7Group 5D-Block
Chemical Specimen/Db
Concentric Electron Shells7 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 18e⁻→
n=4: 32e⁻→
n=5: 32e⁻→
n=6: 11e⁻→
n=7: 2e⁻
Scientific Monograph • Transition Metal
3D Atom SimulatorDubnium (Db) Scientific Profile
Dubnium (Db) is an element with atomic number 105, classified as a transition metal. Positioned in Period 7, Group 5, and D-block, its chemical and physical profile is defined by its electron configuration ([Rn]5f¹⁴6d³7s²) and periodic trends.
Interactive Virtual Labs Available for Dubnium
3D Orbitals & Valence Lab
Simulate concentric quantum energy levels, observe valence electron spins, and examine live atomic clouds in full 3D.
Electronic Configuration Lab
Experiment with Aufbau subshell ordering, explore orbital occupancy, and analyze quantum configuration exceptions.
Electron Config
[Rn]5f¹⁴6d³7s²
Electronegativity
n/a Pauling
Year Discovered
1967
Orbital Shells
7 Principal Levels
Orbital Block
d-block orbital
Group / Period
G: 5 • P: 7
Technological Utility
Industrial & Energy Applications
Dubnium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Dubnium does not play a prominent biological role in human biochemistry, existing primarily as a trace element or mineral component in natural ecosystems.
Geochemistry & Abundance
Cosmic & Terrestrial Occurrence
Elements like Dubnium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Dubnium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Dubnium
Q
What are the key physical and atomic properties of Dubnium?
Dubnium (Db) has an atomic number of 105 and a standard atomic mass of 268 u. It is positioned in Period 7, Group 5, in the D-block, and is classified within the Transition Metal category.
Q
What is the electron configuration of Dubnium?
The ground-state electron configuration of Dubnium is [Rn]5f¹⁴6d³7s². Its 105 electrons are distributed across 7 principal energy levels (2, 8, 18, 32, 32, 11, 2).
Q
Why does Dubnium exhibit an electron configuration exception?
Dubnium follows standard Aufbau principle orbital filling. Transition metals and heavy elements optimize their shell filling based on subshell exchange energy and electrostatic stability.
Q
What are the primary commercial and laboratory uses of Dubnium?
Dubnium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.