Large nuclei tend to be radioactive because they are unstable and have an excess of protons and neutrons, leading to a higher likelihood of undergoing radioactive decay to achieve a more stable configuration.
Nuclei with very large atomic numbers, such as those above Z=83, tend to be unstable due to the increasing electrostatic repulsion between protons. This can lead to spontaneous radioactive decay in the form of alpha decay, beta decay, or fission.
Very large nuclei have more protons, which increases the electromagnetic repulsion among them, making the nucleus less stable. Additionally, for very large nuclei, the strong nuclear force may not be strong enough to overcome the repulsive forces, leading to instability. Lastly, large nuclei may have too many neutrons, which can lead to instability due to the imbalance in the ratio of protons to neutrons.
Stable nuclei have a balanced number of protons and neutrons, while unstable nuclei have an imbalance, leading to radioactive decay.
There are many unstable nuclei that exist in nature, but the exact number is difficult to determine due to the sheer variety of radioactive isotopes that can occur. These unstable nuclei can undergo radioactive decay to become more stable over time.
Radioactive decay is the process in which unstable nuclei release radiation in the form of alpha particles, beta particles, or gamma rays.
Nuclei with very large atomic numbers, such as those above Z=83, tend to be unstable due to the increasing electrostatic repulsion between protons. This can lead to spontaneous radioactive decay in the form of alpha decay, beta decay, or fission.
The stable nuclei that are not radioactive include, for example, carbon-12, oxygen-16, and neon-20. These nuclei have a balanced composition of protons and neutrons that do not undergo radioactive decay.
Radioactive isotopes are not stable.
In this analogy, the heads of the pennies could represent stable nuclei, while the tails could represent radioactive nuclei. Stable nuclei do not undergo spontaneous decay, while radioactive nuclei have the potential to decay and emit radiation over time.
Atomic nuclei are changed by nuclear reactions or radioactive disintegration.
fission- is a process in which the nuclei of radioactive atoms are split in to two or more smaller nuclei.
its nuclei can split apart
radioactive
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."
Very large nuclei have more protons, which increases the electromagnetic repulsion among them, making the nucleus less stable. Additionally, for very large nuclei, the strong nuclear force may not be strong enough to overcome the repulsive forces, leading to instability. Lastly, large nuclei may have too many neutrons, which can lead to instability due to the imbalance in the ratio of protons to neutrons.
I believe it has to do with fusion and fission, as all radioactive isotopes want to be as stable as possible.
Actinides are radioactive because they have unstable atomic nuclei that tend to undergo nuclear decay by emitting radiation in the form of alpha, beta, or gamma rays. This radioactive decay process results in the transformation of actinides into other elements, often leading to the formation of stable isotopes over time.