Oganesson (Og)
"Meet the 'Ghostly Giant,' the heaviest element ever created, appearing for a fleeting moment before vanishing, defying all expected noble gas rules!"
A memorable persona to anchor Og in your mind.
5
Grams per cm³
N/A
Celsius (°C)
N/A
Radius (pm)
Daily Life Link
Like trying to catch a fleeting glimpse of a legendary, super-fast ghost that's gone the instant you notice it.
Discovery & History
Year Discovered
2002
Discovered By
JINR & Lawrence Livermore National Laboratory (LLNL)
Origin of Name
"The name recognises the Russian nuclear physicist Yuri Oganessian for his contributions to transactinide element research."
Technical Properties
Atomic Mass
[294] u
Standard State
gas (expected)
Boiling Point
N/A
Electron Configuration
[Rn] 5f146d107s27p6
1st Ionization Energy
N/A
Electron Affinity
N/A
Oxidation States
"An unseen, predicted heavy solid, likely metallic or semi-metallic, that exists for less than a blink of an eye."
Did You Know?
Oganesson (Og) is named after Yuri Oganessian, one of only two people alive to have an element named in their honor. Talk about a legacy!
Clocking in at atomic number 118, Oganesson is currently the heaviest element ever created, pushing the limits of the periodic table!
Don't go looking for it in nature; Oganesson is purely synthetic! Scientists craft it atom by atom in powerful particle accelerators.
Blink and you'll miss it! The longest-lived isotope of Oganesson, Og-294, has a half-life of less than a millisecond (around 0.89 ms).