noble gas


no·ble gas

noun \ˈnō-bəl-\

Definition of NOBLE GAS

: any of a group of rare gases that include helium, neon, argon, krypton, xenon, and sometimes radon and that exhibit great stability and extremely low reaction rates—called also inert gas

Seen & Heard

What made you want to look up noble gas? Please tell us where you read or heard it (including the quote, if possible).