lyftlingur (the baby-gas, hydrogen), hjályftlingur (helium)

An interesting avenue of thought is naming the first two elements, the lightest gases hydrogen and helium lyftlingar (gaskins), which is a diminutive of loft (air, gas) by adding the suffix -lingur.  The singular form lyflingur could be synonymous to hydrogen and the compound hjályftlingur (hjá- additional + lyftlingur (baby-gas)) could be used of helium. I founded this idea upon melmlingur (diminutive of málmur, metal), which I used to designate the two lightest metals lithium (melmlingur) and berylium (þolmelmlingur).  But there is a difference though: lithium and beryllium are dwarfs among the metallic elements not only with respect to density, atomic weight and radius, but also abundance, which is completely the other way round in the case of the two primordial gases.  Still lyftlingur and hjályftlingur could be a valid designation for the two lightest gases in the universe.