now that is just asking for the thread to go off topic :lol: If you think sodium is bad, certainly don't pee on francium, that will completely remodel your bathroom and probably level your house in the process :shock: on topic: don't log in on your runescape account on public computers or at a friends house Sodium is mild.. very mild.. it will only explode on contact with a strong, and preferably high temperature acid.. francium is too unstable to piss on, let alone expose to air or take out of a lab environment.. caesium is in military use, and nigh on impossible to get as a civvy, its also extremely dangerous, it alone would destroy your bathroom, in not vast quantities.. however if you want some extremely dangerous, doable inschool fun.. heat sulphuric/nitric acid over a bunsen, then drop potassium into it.. be prepared to lose an eye, and possibly some fingers in the explosion and hot acid spray:D