Each decay releases excess energy from the nucleus, bringing it closer to a stable ground state.
Yes
It is true that unstable nuclei will undergo radioactive decay in order to gain stability. These include nuclei of #43 Technitium (Tc), any nucleus containing more that 83 protons and any nucleus with a high neutron-to-proton ratio, such as carbon-14. The most common forms of decay are by emission of an alpha particle (2 protons and 2 neutrons ... a helium nucleus!) or a beta-negative decay in which a neutron bcomes a proton by emitting an electron and an antineutrino.
Those elements undergo the 'decay' process which have unstable nuclei so decay is necessary to gain the stability. such elements form the smaller stable nuclei as Lead nucleus.
when an isotope is it does not undergo radioactive decay
Nuclei undergo radioactive decay in order to release some of the "stress" in the atom. At a certain point, the nucleus of an atom gets too large to sustain all of those protons and neutrons. When the "stress" is relieved, a phenomenon called radioactive decay occurs.
Isotopes are atoms of the same element with different numbers of neutrons. Stable isotopes have a balanced number of protons and neutrons, meaning their nuclei do not decay over time. Unstable isotopes, also known as radioactive isotopes, have an imbalance of protons and neutrons, causing their nuclei to decay and emit radiation over time.
Atomic nuclei that are unstable and decaying are said to be radioactive. Radioactive decay involves alpha, beta and gamma particle emissions.
radioactive decay
The instability of the nuclei is the basic cause of radioactive decay.
No stable isotopes.
Radioactive decay
No, the fusion process is the opposite of the radioactive decay process. Fusion is the merging together of nuclei to form a heavier nucleus whereas fission or radioactive decay is the splitting apart of a heavy nucleus into lighter daughter nuclei.