Helium (He)
"Meet 'The Chill Whisperer,' the universe's ultimate light-as-air secret agent who lifts spirits (literally!) and chills out cutting-edge tech without ever making a fuss."
A memorable persona to anchor He in your mind.
0.178
Grams per cm³
N/A
Celsius (°C)
140
Radius (pm)
Daily Life Link
Think of those floating party balloons that defy gravity and give you a hilarious squeaky voice.
Discovery & History
Year Discovered
1895
Discovered By
"Pierre Janssen, Norman Lockyer (Detection); Sir William Ramsay, Cleve, & Langlet (Isolation)"
Origin of Name
"The name is derived from the Greek, 'helios' meaning sun, as it was in the sun's corona that helium was first detected."
Technical Properties
Atomic Mass
4.003 u
Standard State
gas
Boiling Point
-268.928°C
Electron Configuration
1s2
1st Ionization Energy
24.587 eV
Electron Affinity
N/A
Oxidation States
"It's an invisible, odorless, tasteless gas – you can't see it, smell it, or taste it, but you'll definitely feel its lift!"
Did You Know?
Mind-blowing fact: Helium was actually discovered in the Sun before it was found on Earth! Scientists spotted its unique spectral lines during a solar eclipse in 1868. Talk about an extraterrestrial find!
It's the second lightest element in the entire universe, just after hydrogen. That's why it's so good at making things float – it's practically weightless!
Helium is one of the 'noble gases,' meaning it's super unreactive. It doesn't like to bond with other elements, making it incredibly stable and aloof – the true introvert of the periodic table!
The classic helium voice isn't because it changes your vocal cords, but because it's so light! Sound travels faster through helium than air, shortening the resonant frequencies in your vocal tract, making your voice sound higher and squeakier.