Hydrogen (H)
"The Cosmic Originator, Hydrogen is the universe's ultimate light heavyweight, building everything from stars to you with just one proton power!"
A memorable persona to anchor H in your mind.
0.089
Grams per cm³
-259.16
Celsius (°C)
120
Radius (pm)
Daily Life Link
The 'H' in H₂O – literally half of every water molecule you drink!
Discovery & History
Year Discovered
1766
Discovered By
Henry Cavendish
Origin of Name
"The name is derived from the Greek 'hydro' and 'genes' meaning water forming."
Technical Properties
Atomic Mass
1.008 u
Standard State
gas
Boiling Point
-252.879°C
Electron Configuration
1s1
1st Ionization Energy
13.598 eV
Electron Affinity
N/A
Oxidation States
"An invisible whisper, utterly undetectable to your senses."
Did You Know?
King of the Cosmos: Hydrogen makes up about 75% of the entire universe's mass and over 90% of its atoms. It's truly everywhere!
Lightest Challenger: With an atomic weight of just 1.008, Hydrogen is the absolute lightest element. It literally floats above all others!
Big Bang Baby: It was the first element to form after the Big Bang, meaning you're looking at one of the universe's original building blocks!
Star Power: Our Sun (and almost every other star!) is powered by Hydrogen! It fuses into Helium, releasing immense energy and light.