what is the most expensive element in the periodic table?

[tali1]

what is the most expensive element in the periodic table?
is platinum more expensive than gold? what about nuclear fuels like uranium and plutonium how expensive are they? (don't worry im not purchasing any!)
BOOOM!

[jno]

this one

http://www.suppliersonline.com/research/Charts /periodic/113Unobtainium.asp

[jake-the-peg]

A number of the very radioactive elements at the very end of the periodic table can only be artificially created and observed for a tiny fraction of a second becore they decay.

So given that you need a nuclear accelerator and they don't last long it'd be any of these.

However obviously you can't actually buy these so they don't count really.

Californium 252 (half life 2.6 years) has been sold at about $1,000 a microgram in 1968 so that's a good contender

[burnhal]

palladium- element no 46 - used in things like catalytic converters- costs twice as much as platinum which itself is roughly twice as expensive as gold