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en.wikipedia.org/wiki/Isotope

Isotopes are variants of a particular chemical element which differ in neutron number. ..... Of 35 primordial radionuclides there exist four even-odd nuclides ( see table at right), including the fissile 235 92U . Because of their odd neutron numbers, ...

www.chemicalforums.com/index.php?topic=3952.0

Because they can? If a nucleus can exist with the same number of protons, but different numbers of electrons...then it will at some point ...

www.reference.com/science/isotopes-exist-75941fa0d3c396eb

Isotopes exist because the atomic nuclei of many elements are stable or somewhat stable with different numbers of neutrons in them. Because the identity of an ...

www.quora.com/Why-do-isotopes-exist

It's easy to pick up an extra neutron. It comes in, it sticks with nuclear force, no problem. Why not? That happens in stars with a neutron source, in a nucleogenic  ...

www.scienceclarified.com/everyday/Real-Life-Chemistry-Vol-1/Isotopes-How-it-works.html

Due to their high levels of radioactivity, they exist only for extremely short ... the same number of neutrons as it does protons and electrons: some do, but this is ...

www.quora.com/Why-do-isotopes-exist-according-to-chemistry

Feb 21, 2017 ... The creation of isotopes is answered by physics, though there is not always a clear delineation between these fields at the atomic level.

socratic.org/questions/why-do-atoms-have-different-isotopes

Jun 6, 2014 ... Atoms have different isotopes because the number of neutrons in the nucleus of the atom varies. The number of protons in an atom of an ...

www.britannica.com/science/radioactive-isotope

Mar 17, 2016 ... Radioactive isotope, also called radioisotope, radionuclide, or radioactive nuclide, any of several species of the same chemical element with ...

www.chem4kids.com/files/atom_isotopes.html

This tutorial introduces the basics of isotopes. ... Isotopes are atoms of elements with different numbers of neutrons ... That type of atom is called an isotope. ... Also, we do not collect or ask for personally identifiable information on any of our  ...

www.soest.hawaii.edu/GG/ASK/isotopes.html

When an unstable isotope decays, it makes a new atom of a different element. Stable, isotopes, on the other hand, do not decay. What determines whether an ...