navni gismu

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

Default neon. See also xukmi, gapci; tolfragapci; solnavni, ninynavni, laznynavni, mipnavni, fangynavni, dircynavni.

In notes:

cmuxu'i
x1 is an element of kind x2 with purity x3.
dircynavni
x1 is a quantity of/contains/is made of radon (Rn).
fangynavni
x1 is a quantity of/contains/is made of xenon (Xe).
laznynavni
x1 is a quantity of/contains/is made of argon (Ar).
mipnavni
x1 is a quantity of/contains/is made of krypton (Kr).
ninynavni
x1 is a quantity of/contains/is made of neon (Ne).
tolfragapci
x1=t1=g1 is inert gas of material/composition including x2=g2, under conditions x3=g3.
rakle
x1 is an atomic element in group x2 [usually, vertical column; denotes electron configuration and, thereby, chemical similarity with vertical neighbors] and period x3 [usually, horizontal row; denotes similarity in size with horizontal neighbors, as well as having the same number and type of electron shells as them] and belonging to other 'class'/'category'/'type'/having other properties x4 according to scheme/organization pattern/standard/periodic table x5.
ratniklesi
x1 is an atomic element in group x2 [usually, vertical column; denotes electron configuration and, thereby, chemical similarity with vertical neighbors] and period x3 [usually, horizontal row; denotes similarity in size with horizontal neighbors, as well as having the same number and type of electron shells as them] and belonging to other 'class'/'category'/'type'/having other properties x4 according to scheme/organization pattern/standard/periodic table x5.