[mirimir]

Huh. Basically like uranium?

But what compound? PbH4 isn't stable. PbF4 is barely stable. Maybe Pb(CH4)4 ??? Naively, I guess that you'd get even better mass resolution. Molectual mass of UF6 being ~352, vs ~267 for Pb(CH4)4. Good use for all those leftover centrifuges ;)

[sandworm101]

Or maybe even with just liquid lead? Would need very different machines but might be possible.