noble gas
Noun
Meaning
any of the chemically inert gaseous elements of the helium group in the periodic table
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
Atoms will share valence electrons in such a way as to create a noble gas electron configuration (eight electrons in their outermost shell) for each atom.
During bubble collapse, the inertia of the surrounding water causes high pressure and high temperature, reaching around 10,000 Kelvin in the interior of the bubble, causing the ionization of a small fraction of the noble gas present.
Atoms that do not obey their rule are called "electron-deficient" when they have too few electrons to achieve a noble gas configuration, or "hypervalent" when they have too many electrons.
High-order harmonic generation has been observed in noble gas jets, cells, and gas-filled capillary waveguides.
A shot glass -shaped container is aerated with a noble gas and sealed with the Teflon block.
Chemical properties Being a noble gas, radon is chemically not very reactive.