Radioactive Isotope Radiocarbon Dating or Carbon Dating or
It is natural or artificially created isotope of a
chemical element having an unstable nucleus It is a method for determining the age of an
that decays, emitting alpha, beta, or gamma object containing organic material by using the
rays until stability is reached. properties of radiocarbon or Carbon-14, a
radioactive isotope of carbon.
Major Uses of Radioisotopes
Isotope It is used to determine the age of earth,
Cobalt-60 Gamma ray irradiation of minerals and rocks.
It is based on the radioactive isotopes of
Chromium- Used in research in RBC
51 survival studies uranium, usually 238U or 235U.
Cobalt-57 Used as a tracer to diagnose
Facts about Atomic Structure
Cadmium- Used to analyze metal alloys
The word "atom" comes from the Greek
109 for checking stock, scrap
sorting word for "uncuttable" or "undivided".
Calcium-47 Important aid to biomedical Nearly one hundred percent of the mass of
researchers studying the an atom (99.94%) is contained in the
cellular functions and bone nucleus.
formation in mammals. Hydrogen (H) is highly flammable and is
Carbon-14 Helps in research to ensure the most common element found in our
that potential new drugs are
metabolized without forming universe.
harmful byproducts. The most abundant type of atom in the
Iodine-123 Used to diagnose thyroid universe is the hydrogen atom. Nearly
disorders and other metabolic 74% of the atoms in the Milky Way
disorders including brain galaxy are hydrogen atoms.
function. The isotopes undergo radioactive decay
Phosphorus- Cancer detection and
due to their unstable nuclei.
32 treatment, especially in eyes
and skin In 1661, Robert Boyle first published the
Xenon-133 Used in nuclear medicine for theory that all matter was composed of
lung ventilation and blood atoms.