Radium and Calium
 

Does anyone know who discovered Radium and Calium?? :? i mean i have looked just about every where and i can't seem to find out those answer!! So i was wondering does anyone know the answer to my question :?:

The Wikipedia is fantastic for questions like this.

http://en.wikipedia.org/wiki/Main_Page

Marie and Pierre Curie discovered radium in 1898.

Unfortunately the Wikipedia doesn't seem to have the history of calcium. However this site does:

http://www.webelements.com/webelemen...m/history.html

Apparently an Englishman named Sir Humphrey Davy first isolated calcium metal in 1808.