I won't tell you the details, so as not to give away any spoilers. You can check out the link above if you're not fussed.
Anyway, it made me realise that I didn't have a decent periodic table reference anywhere. So, I went searching and found this beautiful one.
It provides not only the basic reference information, but also a picture of one or more samples of the element ... and even Quicktime 3D videos in many cases!
Here's another excellent one, with a nice user interface. Clicking on an element displays a pop-up window containing a truly amazing amount of information, beautifully laid out.