Atomic number 525. Can never be found in a solution.
Biochemistry is the study of carbon compounds that crawl.
Because they're cheaper than day rates. The back of a cafeteria. A great periodic table online, with downloadable and printable versions, as well as loads of information about every element online, including history, facts, and physical and chemical properties. ChemGlobe Periodic Table Printable and downloadable of a periodic table that also lists densities. Chemicool Periodic Table at MIT Lots of easily-accessible information about each element.