navni gismu

x1 is a quantity of/contains/is made of inert gas of type x2 [neon/argon/radon/xenon/krypton].

Default neon. See also xukmi, gapci.


In notes:

cmuxu'i
x1 is an element of kind x2 with purity x3.
solnavni
x1 is a quantity of/contains/is made of helium (He).