Argon (Ar)
"Meet Argon, the ultimate 'Invisible Guardian'! This noble gas is a master of stealth, creating protective force fields that keep delicate things stable and safe without ever getting involved in the action."
A memorable persona to anchor Ar in your mind.
1.784
Grams per cm³
-189.34
Celsius (°C)
188
Radius (pm)
Daily Life Link
It’s the secret ingredient making your lightbulbs glow longer and helping welders create super-strong metal bonds.
Discovery & History
Year Discovered
1894
Discovered By
Lord Rayleigh & William Ramsay
Origin of Name
"The name is derived from the Greek, ''argos'', meaning idle."
Technical Properties
Atomic Mass
39.95 u
Standard State
gas
Boiling Point
-185.848°C
Electron Configuration
[Ne] 3s23p6
1st Ionization Energy
15.76 eV
Electron Affinity
N/A
Oxidation States
"Invisible, odorless, and utterly undetectable to your senses – literally, it's a gas!"
Did You Know?
The Original 'Lazy' Gas: Its name comes from the ancient Greek word 'argos,' meaning 'lazy' or 'inactive.' It perfectly describes this element's extreme chillness and lack of reactivity!
Atmosphere's Silent Giant: Argon is the third most abundant gas in Earth's atmosphere, making up nearly 1% of the air you breathe. It's everywhere, yet you never notice it!
Discovery Drama: In 1894, scientists Lord Rayleigh and William Ramsay discovered Argon – the very first noble gas ever identified! They literally found an entire element hiding in plain sight.
Lightbulb's Life Support: Argon fills incandescent light bulbs, preventing the super-hot tungsten filament from burning out too quickly. It gives your lights a longer, brighter life!