noble gas
inert gas
argonon

Until the 1960s, no chemical bond with a noble gas was known.

They bond well with all elements except the noble gases.

His table did not include any of the noble gases, which were discovered later.

It was the first discovered binary compound of a noble gas.

It is a member of group 18 (noble gases) elements.

It was this particular characteristic that brought to mind a name for the new group: the noble gases.

It is in group 18 (noble gases) of the periodic table.

This was the first real compound of any noble gas.

People separated the air into many parts and isolated the noble gases from it.

This group is called the noble gases of the periodic table.