Atomic energy is an outdated phrase which can mean a number of things related to energy produced by atoms:
* Radioactivity, the set of various processes by which unstable atomic nuclei (nuclides) emit subatomic particles
* Nuclear reaction, a process in which two nuclei or nuclear particles collide, to produce different products than the initial products; see also nuclear fission and nuclear fusion
* Nuclear energy, energy produced by nuclear reactors
* The energy of inter-atomic or chemical bonds, which holds atoms together in compounds.
The term may have originated with H. G. Wells in the phrase, "splitting the atom", devised at a time prior to the discovery of the nucleus. The term is a solecism. -Wikipedia
Uranium was good for you!