monosyllabic term for cadmium possible in Icelandic: tink

Cadmium is the homolog of zinc (Icelandic: sink) two places to the left of "tin": sink + tin = TINK

thallium - þál

The shortest possible word for thallium is þál (the initial of thallium with "-ál" added, in reference of the fact that thallium is a member of the Aluminium group of metals.

Update on thorium

Apart from Þórefni, there's another possibility for this element, which was named after the Scandinavian god of thunder by Berzelius who discovered thorium in a mineral from the Norwegian Island løvøy (leaf-Island, islandic Laufey)


No postplumbic element exect for thorium can be linked up with Scandinavia.  For that reason I want to call it "norðblý" (the norwegian lead).


So we have two possibilities now: þórefni and norðblý