Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Barium exhibits chemical reactivity characteristic of the alkaline earth family, governed by an electronegativity of 0.89 and standard valence interactions.
Z = 56Alkaline Earth Metal
Launch 3D Atom & Orbitals LabBarium
Ba
Standard Atomic Mass: 137.33 u
Period 6Group 2S-Block
Chemical Specimen/Ba
Concentric Electron Shells6 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 18e⁻→
n=4: 18e⁻→
n=5: 8e⁻→
n=6: 2e⁻
Scientific Monograph • Alkaline Earth Metal
3D Atom SimulatorBarium (Ba) Scientific Profile
Barium (Ba) is an element with atomic number 56, classified as a alkaline earth. Positioned in Period 6, Group 2, and S-block, its chemical and physical profile is defined by its electron configuration ([Xe]6s²) and periodic trends.
Interactive Virtual Labs Available for Barium
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
[Xe]6s²
Electronegativity
0.89 Pauling
Year Discovered
Ancient Era
Orbital Shells
6 Principal Levels
Orbital Block
s-block orbital
Group / Period
G: 2 • P: 6
Technological Utility
Industrial & Energy Applications
Barium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Barium 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 Barium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Barium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Barium
Q
What are the key physical and atomic properties of Barium?
Barium (Ba) has an atomic number of 56 and a standard atomic mass of 137.33 u. It is positioned in Period 6, Group 2, in the S-block, and is classified within the Alkaline Earth Metal category.
Q
What is the electron configuration of Barium?
The ground-state electron configuration of Barium is [Xe]6s². Its 56 electrons are distributed across 6 principal energy levels (2, 8, 18, 18, 8, 2).
Q
Why does Barium exhibit an electron configuration exception?
Barium 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 Barium?
Barium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.