Atom the nucleus defines to what chemical element the atom belongs: for example, all copper atoms contain 29 protons. The number of neutrons defines the isotope of the element. The number of electrons influences the magnetic properties of an atom. Atoms can attach to one or more other atoms by chemical bonds to form chemical compounds such as molecules. The ability of atoms to associate and dissociate is responsible for most of the physical changes observed in nature and is the subject of the discipline of chemistry. The idea that matter is made up of discrete units is a very old
Mister Atom Mister Atom can fly and fire nuclear blasts from his hands (In the Golden Age, at least, lead is impervious to these blasts). Mister Atom appeared in an issue of the "Justice League Unlimited" comic book, where Doctor Sivana was trying to rebuild him with the help of a local gang. Atom and Sivana were eventually defeated by the Justice League, particularly Vibe. The character also appeared several times in the all-ages comic series "Billy Batson and the Magic of Shazam!" Mister Atom Mister Atom is a fictional comic book supervillain, a radioactive robot who is regularly seen as an