Radioactive, as applied to an atom, means the nucleus is unstable, and "wants" to change into something else, either by emitting particles or energy. or by absorbing particles or energy.
Answ2. Radioactivity is a one-way street. It only loses total energy.
BUT it is possible to add energy/mass to a simple atom; as obviously happens in super nova by the process of fission.
This can also be done in an linear accelerator by accelerating a mass and firing it into a target.
Radio active atoms are alpha, beta and gamma.
A radioactive atom is one that will decay (break up) eventually.
Its nucleus emits radioactive particles continuously.
Weak Force
Similarity: Both show that the radioactive atoms decrease and decayed atoms increase Difference: an actual decay is longer.
You can also say that they are radioactive.
If you are referring to a cell's nucleus than the simple answer is that's not radioactive. Radioactivity occurs when elemental atoms become unstable due to the loss or gain of additional neutrons; these unstable atoms are referred to as radioactive isotopes. If a cell's nucleus were radioactive it would not last very long, its structure and function would quickly degrade and collapse.
yes
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."
No
A stable, nonradioactive atom must be formed.
Yes. All of the actinides are radioactive.
Its nucleus emits radioactive particles continuously.
Unstable atoms are said to be radioactive
Generally, the smaller the nucleus, the less radioactive.
8
The half-life
radioisotopes
A radioactive atom is an atom that has an unstable nuclear force, and therefore either absorbs or emits a radioactive particle.