The other day day I was thinking about Lead, can't quite figure out why. There is a lot of Lead on earth yet it as very hard for the universe to synthesise. It is made in very small quantities in the universe yet there is a lot of it on earth. I call that the Lead on Earth paradox. The Lead on Earth paradox was solved a long time ago. What happens is everything that is heavier than Lead is unstable so it eventually decays into Lead, one day all the Plutonium, Uranium, Radium and all other heavy radioactive elements will become Lead through radioactive decay. Lead is in the same family as carbon because it can have 4 bonds.
When the 4 bonds are used for Hydrogen, Lead becomes Plumbane, it is like Methane but Lead is used instead of carbon.
Plumbane condenses at -13°c I think so it would be a liquid quite easily. I was wondering what a Plumbane Lake would be like, would it look like water. What would a methane lake look like? I don't have to imagine that, there are methane lakes on Titan.