Noble gases
Type a name, a symbol, an atomic number — or something vague like radioactive, liquid or d-block.
7 elements match
He
Helium
Inert, weightless and permanently escaping: helium is the only element that will not freeze at ordinary pressure, no matter how cold you make it.
Ne
Neon
Chemically inert, optically unforgettable: neon is the orange-red glow that defined the twentieth-century city at night.
Ar
Argon
The third most common gas in the air, and completely uninterested in reacting with any of it.
Kr
Krypton
Named "hidden", used to define the metre, and briefly the fictional weakness of a superhero.
Xe
Xenon
A noble gas heavy enough to be an anaesthetic, and bright enough to flash a camera.
Rn
Radon
A radioactive noble gas that seeps out of granite and is the second leading cause of lung cancer.
Og
Oganesson
The heaviest element ever made, and the only one named after a living person at the time.
Search tips
What this understands
Identity
Names, symbols and atomic numbers, in any case. au, Gold and 79 all land on the same page.
Families & blocks
noble gas, halogen, lanthanide, d-block, period 4, group 17.
Properties
radioactive, synthetic, liquid, gas, precious — and any text from an electron configuration.