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Atomic Profile
Argon (Ar)
Discover properties, shell configurations, industrial applications, compounds, and historical occurrences of the Argon element.
18Ar39.948
Physical Properties
Melting Point-189.34 °C
Boiling Point-185.85 °C
Density1.784 g/L
Electronegativityno data
Group / PeriodGroup 18, Period 3
Electronic Config[Ne] 3s² 3p⁶
Bohr Shells2, 8, 8
Bohr Electron Model
Visualizing the concentric Bohr orbits and energy level shells for Argon.
+18
Shell 1: 2e⁻ | Shell 2: 8e⁻ | Shell 3: 8e⁻
Origin & Abundance
Discovery Details
Discovered by Lord Rayleigh & William Ramsay in the year 1894.
Natural Occurrence
Third most abundant atmospheric gas (0.93% by volume), making it the most abundant noble gas on Earth.
Common Uses & Applications
- Inert atmosphere shielding for welding
- Double-pane window thermal insulation filler
- Incandescent light bulb filament protection
- Document preservation casings
Common Chemical Compounds
Below are typical molecular compounds formed by Argon interacting with other elements:
HArF (Argon Fluorohydride - only stable at -265 °C)
Element Concept Check
Which gas is the third most abundant in dry air by volume?
Video Lectures & Fact Files
Watch educational lectures detailing the chemical extraction and molecular spectrums of Argon.
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