The answer is: The strong nuclear force is not large enough to overcome the electric force for large nuclei.
Hope I answered your question.=)
Increasing the ratio neutrons/protons in the nucleus the atom become unstable.
Radioactivity is caused by the instability of an atom's nucleus. An unstable nucleus can emit particles or energy in the form of radiation in order to become more stable. This process is known as radioactive decay.
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
Instability is due to a certain ratio between neutrons and protons in the atomic nucleus.
An atom containing an unstable nucleus is called a radioactive atom. These atoms emit radiation as they decay in order to become more stable. The emitted radiation can be in the form of alpha particles, beta particles, or gamma rays.
Increasing the ratio neutrons/protons in the nucleus the atom become unstable.
A radioactive atom is an atom of an element with an unstable nucleus.
radioisotope
Radioactivity starts in an atom's nucleus, specifically when the nucleus is unstable and tries to become more stable by emitting particles such as alpha or beta particles, or energy in the form of gamma rays. This process is known as radioactive decay.
Radioactivity is caused by the instability of an atom's nucleus. An unstable nucleus can emit particles or energy in the form of radiation in order to become more stable. This process is known as radioactive decay.
Nucleus
the absorption of a free-moving neutron by the atom's nucleus
the atom to become unstable and rip apart
It is when an atom's nucleus contains too many neutrons and becomes too unstable. Thus, the nucleus "wants" to become more stable and thus splits into two lighter nuclei. To get rid of the extra neutrons that were making the atom unstable, when the atom splits apart, these neutrons are ejected outwards. The two split nuclei become two separate, more stable atoms.
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
An unstable nucleus can undergo radioactive decay to become more stable. This can involve emitting radiation in the form of alpha particles, beta particles, or gamma rays. The decay process results in a transformation of the nucleus into a different element or isotope.
Carbon atom contains only 6 protons. It is become unstable when number of neutrons are increasing.