yes
No. Some are stable.
Decay series
All isotopes of all elements with atomic number similar or greater than 84 are radioactive, and don't have stable nuclei.
Decay Series
A. Different atoms of the same nuclide have different half-lives.B. each radioactive nuclide has its own half-life.C. All radioactive nuclides of an element have the same half-life.D. All radioactive nuclides have the same half-life.
It will stop when there is nothing left to decay. There is basically no way to stop certain nuclides (isotopes) from decaying.
Yes. From a technical point of view, all elements have isotopes (nuclides) that are radioactive and therefore have half-lives. But the majority of these are artificial - man made, and do not occur in nature on Earth. Even hydrogen has nuclides of deuterium and tritium, deuterium is stable and natural, and tritium has a half life of 12.33 years. Having said that, there are a number of nuclides that are stable and occur naturally.
Heavy nuclides are atoms that have a high atomic number and are typically found in the lower region of the periodic table, such as elements like lead, uranium, and thorium. These nuclides often have a high mass and can be unstable, leading to radioactive decay.
Radioactive nuclides can ionize molecules in the air, breaking chemical bonds and creating free radicals. This ionization may lead to the formation of reactive species that can participate in chemical reactions, potentially altering the composition of the atmosphere and affecting health and the environment.
Artificial radioactive nuclides are typically produced through processes like nuclear fission reactions in nuclear reactors or particle accelerators bombarding target atoms with high-energy particles. These processes can introduce additional neutrons or protons into the nucleus, leading to the creation of new, unstable isotopes.
No, halflife is a bulk statistical property of a quantity of an isotope of an element.Individual nuclei do not have halflives, instead they have a probability of decaying at the current moment of time.
The correct answer is: Half-lives are not affected by temperature.