Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Arsenic exhibits chemical reactivity characteristic of the metalloid family, governed by an electronegativity of 2.18 and standard valence interactions.
Z = 33Metalloid
Launch 3D Atom & Orbitals LabArsenic
As
Standard Atomic Mass: 74.922 u
Period 4Group 15P-Block
Chemical Specimen/As
Concentric Electron Shells4 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 18e⁻→
n=4: 5e⁻
Scientific Monograph • Metalloid
3D Atom SimulatorArsenic (As) Scientific Profile
Arsenic (As) is an element with atomic number 33, classified as a metalloid. Positioned in Period 4, Group 15, and P-block, its chemical and physical profile is defined by its electron configuration ([Ar]3d¹⁰4s²4p³) and periodic trends.
Interactive Virtual Labs Available for Arsenic
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]3d¹⁰4s²4p³
Electronegativity
2.18 Pauling
Year Discovered
Ancient Era
Orbital Shells
4 Principal Levels
Orbital Block
p-block orbital
Group / Period
G: 15 • P: 4
Technological Utility
Industrial & Energy Applications
Arsenic is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Arsenic 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 Arsenic are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Arsenic is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Arsenic
Q
What are the key physical and atomic properties of Arsenic?
Arsenic (As) has an atomic number of 33 and a standard atomic mass of 74.922 u. It is positioned in Period 4, Group 15, in the P-block, and is classified within the Metalloid category.
Q
What is the electron configuration of Arsenic?
The ground-state electron configuration of Arsenic is [Ar]3d¹⁰4s²4p³. Its 33 electrons are distributed across 4 principal energy levels (2, 8, 18, 5).
Q
Why does Arsenic exhibit an electron configuration exception?
Arsenic 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 Arsenic?
Arsenic is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.