Isotope
An isotope represents Atoms of the same Element that have the same number of Protons but a different number of Neutrons . They therefore have different Atomic Masses but the same chemical properties.
Isotope
A variation of an element that has the same atomic number of protons but a different weight because of the number of neutrons. Various isotopes of the same element may have different radioactive behaviors, some are highly unstable..
Isotopes - Two or more forms of an element that have the same atomic number but different numbers of neutrons in the atomic nucleus and therefore a different atomic weight. Most elements occur naturally as mixtures of isotopes.
Isotope: One of two or more atoms with the same number of protons, but different numbers of neutrons in their nuclei.
Radioisotope
An unstable or radioactive isotope (form) of an element that can change into another element by giving off radiation.
Radionuclide
Any radioactive isotope (form) of any element.
Isotope: One of two or more atoms which have the same atomic number, but different mass number.
Isotropic: Having properties which are the same in all directions.
carbon isotope ratio Ratio of carbon-12 to either of the other, less common, carbon isotopes, carbon- 13 or carbon-14. carbon pool The reservoir containing carbon as a principal element in the geochemical cycle.
RADIOCARBON DATING Carbon-14 is a radioactive isotope of carbon, which is present in minute quantities in the atmosphere. Living things such as wood and the bones of living animals absorb this carbon naturally.
radon daughters/radon progeny Short-lived radioactive decay products of radon that decay into longer-lived lead isotopes, The daughter isotopes can attach themselves to airborne dust and other particles and, if inhaled, ...
Short-lived radioactive decay products of radon that decay into longer-lived lead isotopes. The daughter isotopes can attach themselves to airborne dust and other particles and, if inhaled, damage the lining of the lung.
Means by which something may be followed; for example a radioactive isotope may replace a stable chemical element in a toxic compound enabling the toxicokinetics to be followed.
Activity (of a radioactive isotope)
The number of particles or photons ejected from a radioactive substance per unit time.
Acute hazards ...
Nuclear fission: The splitting of uranium isotopes to produce heat, which is then harnessed to produce electricity.
uranium - a heavy, radioactive metal (atomic number 92) used in the explosion of nuclear weapons (especially one isotope, U-235).
urban parks - parks in cities and areas of high population concentration.
The phosphate anion reversibly attached to the surface of the solid phase of the soil in such form that it may go into solution by anionic equilibrium reactions with isotopes of phosphorus or with other anions of the liquid phase without solution of ...
Spontaneous emission of radiation, normally alpha or beta particles often accompanied by gamma rays, from the nucleus of an (unstable) isotope.
Definition source
Translations of "radioactivity": ...
Isotopes Atoms of the same element having the same chemical properties but differing in mass and in the physical properties that depend on their mass.
 See also: Radiation, Environment, Radioactive, Water, Air
  
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