Option B. It describes what fraction of radioisotope exists present after each half-life has passed is the information does the half-life of a radioisotope give.
What is radioisotope?
Radioisotopes exist as radioactive isotopes of an element. They can also be described as atoms that contain an unstable assortment of neutrons and protons, or surplus energy in their nucleus.
A radionuclide exists as a nuclide that has surplus nuclear energy, creating it unstable. This excess energy can be utilized in one of three methods: emitted from the nucleus as gamma radiation; transferred to one of its electrons to release it as a transformation electron; or used to produce and emit a new particle from the nucleus.
Radioactive half-life exists the time needed for a quantity of a radioisotope to decay by half. If the half-life of an isotope exists relatively short, e.g. a few hours, most of the radioactivity will be gone in a rare day.
Hence, Option B. It describes what fraction of radioisotope exists present after each half-life has passed is the information does the half-life of a radioisotope give.
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