2 in notes

dircynavni lujvo

x₁ is a quantity of/contains/is made of radon (Rn).

See also dirce, navni; ratni

• jbovlaste

In notes:

navni

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

dircyjinme

x₁ is radium.