Is there any element thats more radioactive than radium ?
There are many more radioactive elements than Radium. Of course that depends how you define the magnitude of radioactivity. Radioactivity is a word to describe at least three different types of energetic emission from atomic nuclei: alpha, beta, and gamma. Although gamma radiation is the most penetrating and difficult to protect against, alpha radiation is far more energetic but can be stopped by even a sheet of paper. You also have to decide whether you are measuring radioactivity by the magnitude of the radiation at any particular time or by the length of time that the radiation continues. A simple example is a fusion bomb, radioactivity released so quickly that it becomes explosive on an enormous scale. Radium emits radiation in a complex series of decays to other elements, and there are several different isotopes with different radioactive decay rates. The main isotope, the longest lived, has a half life of about 1,600 years and decays by alpha emission to Radon-222, once known as
