radioactive decay
All atoms are nuclear, in that they all have nuclei. Some atoms have unstable nuclei, making them radioactive. I'm afraid I have no idea what you mean by "nuclear atoms," unless you meant to say radioactive atoms, in which case the answer is "they have unstable nuclei and they're radioactive."
When a large unstable atom splits into two or more smaller atoms, it is called nuclear fission. This process releases a large amount of energy and can result in a chain reaction if not properly controlled.
The minimum amount of unstable atoms needed to produce an uncontrolled chain reaction is called critical mass.
No. If they did, they would be radioactive and unstable.
Nuclear fission
The mass of unstable atoms can vary widely depending on the specific isotope and the decay process involved. Unstable atoms typically have a higher mass compared to stable atoms due to the presence of excess energy or additional subatomic particles. When unstable atoms undergo radioactive decay, they can transform into more stable elements by emitting particles and energy.
Fusion is nuclear synthesis, combining atoms of lesser mass into atoms of greater mass. Decay is reducing the mass of larger (unstable) atoms to form atoms of lesser mass.
Atoms that release nuclear radiation are typically unstable and contain too much energy or mass. Examples include isotopes of elements such as uranium, radium, polonium, and thorium. These atoms undergo radioactive decay to reach a more stable state, emitting alpha particles, beta particles, or gamma rays in the process.
* formation of rutherfordium * fusing of atoms under intense heat and pressure inside a star * radioactive decay of unstable atoms to form new elements * breaking apart of large, unstable atoms in a fission bomb * cosmic rays * nuclear fission and nuclear fusion
The process which describes the splitting of a large unstable atom into two intermediate size atoms and extra neutrons is called nuclear fission. Nuclear fission is a nuclear reaction or a radioactive decay process.
Atoms with unstable nuclei that undergo radioactive decay to transform into another atom are called radioactive isotopes or radioisotopes. These isotopes emit radiation in the form of particles or electromagnetic waves as they decay. This process can result in the formation of different elements or isotopes, depending on the type of decay.
The number 288 does not correspond to an atom as it is not a specific element. Atoms themselves are not considered stable or unstable, but certain isotopes of elements can be unstable and undergo radioactive decay.