Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Potassium exhibits chemical reactivity characteristic of the alkali metal family, governed by an electronegativity of 0.82 and standard valence interactions.
Z = 19Alkali Metal
Launch 3D Atom & Orbitals LabPotassium
K
Standard Atomic Mass: 39.098 u
Period 4Group 1S-Block
Chemical Specimen/K
Concentric Electron Shells4 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 8e⁻→
n=4: 1e⁻
Scientific Monograph • Alkali Metal
3D Atom SimulatorPotassium (K) Scientific Profile
Potassium (K) is an element with atomic number 19, classified as a alkali metal. Positioned in Period 4, Group 1, and S-block, its chemical and physical profile is defined by its electron configuration ([Ar]4s¹) and periodic trends.
Interactive Virtual Labs Available for Potassium
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
[Ar]4s¹
Electronegativity
0.82 Pauling
Year Discovered
1807
Orbital Shells
4 Principal Levels
Orbital Block
s-block orbital
Group / Period
G: 1 • P: 4
Technological Utility
Industrial & Energy Applications
Potassium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Potassium 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 Potassium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Potassium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Potassium
Q
What are the key physical and atomic properties of Potassium?
Potassium (K) has an atomic number of 19 and a standard atomic mass of 39.098 u. It is positioned in Period 4, Group 1, in the S-block, and is classified within the Alkali Metal category.
Q
What is the electron configuration of Potassium?
The ground-state electron configuration of Potassium is [Ar]4s¹. Its 19 electrons are distributed across 4 principal energy levels (2, 8, 8, 1).
Q
Why does Potassium exhibit an electron configuration exception?
Potassium 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 Potassium?
Potassium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.