Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Radium exhibits chemical reactivity characteristic of the alkaline earth family, governed by an electronegativity of 0.9 and standard valence interactions.
Z = 88Alkaline Earth Metal
Launch 3D Atom & Orbitals LabRadium
Ra
Standard Atomic Mass: 226 u
Period 7Group 2S-Block
Chemical Specimen/Ra
Concentric Electron Shells7 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 18e⁻→
n=4: 32e⁻→
n=5: 18e⁻→
n=6: 8e⁻→
n=7: 2e⁻
Scientific Monograph • Alkaline Earth Metal
3D Atom SimulatorRadium (Ra) Scientific Profile
Radium (Ra) is an element with atomic number 88, classified as a alkaline earth. Positioned in Period 7, Group 2, and S-block, its chemical and physical profile is defined by its electron configuration ([Rn]7s²) and periodic trends.
Interactive Virtual Labs Available for Radium
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]7s²
Electronegativity
0.9 Pauling
Year Discovered
Ancient Era
Orbital Shells
7 Principal Levels
Orbital Block
s-block orbital
Group / Period
G: 2 • P: 7
Technological Utility
Industrial & Energy Applications
Radium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Radium 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 Radium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Radium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Radium
Q
What are the key physical and atomic properties of Radium?
Radium (Ra) has an atomic number of 88 and a standard atomic mass of 226 u. It is positioned in Period 7, Group 2, in the S-block, and is classified within the Alkaline Earth Metal category.
Q
What is the electron configuration of Radium?
The ground-state electron configuration of Radium is [Rn]7s². Its 88 electrons are distributed across 7 principal energy levels (2, 8, 18, 32, 18, 8, 2).
Q
Why does Radium exhibit an electron configuration exception?
Radium 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 Radium?
Radium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.