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Although most of the known elements have at least one isotope whose atomic nucleus is stable indefinitely, all elements have isotopes that are unstable and disintegrate, or decay, at measurable rates by emitting radiation.
Recognize that radioactivity is a signature of unstable nuclide - radioisotopes. Describe a radioisotope. Explain how the stability of isotopes depends on the composition of its nucleus. Use the "band of stability" to identify stable isotopes.
6 Αυγ 2017 · The main difference between stable and unstable isotopes is that stable isotopes have stable nuclei whereas unstable isotopes have unstable nuclei. Key Areas Covered. 1. What are Stable Isotopes – Definition, Properties, Applications 2. What are Unstable Isotopes – Definition, Properties, Applications 3.
Why do different isotopes of an element generally have the same physical and chemical properties? How would the nucleus of the hydrogen-1 and hydrogen-2 differ? Relate the concepts of isotope and mass number.
13 Σεπ 2019 · An isotope refers to a sample of atoms. When the number of protons and neutrons of an individual atom is studied, it is called a nuclide of the element. In nuclear science, the term nuclide is preferred over the term isotope. Nuclides with the same mass number as each other are called isobars.
An unstable isotope is a variant of a chemical element that has an unstable nucleus, causing it to undergo radioactive decay over time. This decay process can transform the unstable isotope into a more stable isotope or a completely different element, releasing energy and radiation in the process.
Definition. An unstable isotope is a variant of a chemical element that has an excess of energy or mass, making it prone to decay into a more stable form through radioactive processes.
