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en.wikipedia.org/wiki/Radioactive_decay

Radioactive decay is the process by which an unstable atomic nucleus loses energy by ... If there are multiple particles produced during a single decay, as in beta .... Radioactive decay is seen in all isotopes of all elements of atomic number ...

www.quora.com/What-happens-to-the-atomic-nuclei-of-unstable-isotopes-during-radioactive-decay

If you really want to understand what happens in the atomic nuclei of unstable isotopes, you have to study the weak interaction, which is responsible for the weak ...

www.reference.com/science/happens-atomic-nuclei-unstable-isotopes-during-radioactive-decay-59d7e6d10deb79f

In every instance where an unstable isotope undergoes radioactive decay, one or more atoms with a different number of protons than the decaying atom are ...

www.answers.com/Q/What_happens_to_the_atomic_nuclei_of_unstable_isotopes_during_radioactive_decay

B. are broken down by radioactive bacteria.C. form chemical ... Unstable atomic nuclei decay over time into stable nuclei causing a mineral to be? radioactive.

eesc.columbia.edu/courses/ees/lithosphere/labs/lab12/radioisotope_tutorial.html

Radioactive isotopes (also called radioisotopes) have unstable nuclei. ... Some isotopes release an alpha particle during nuclear disintegration; an alpha ... When an isotope emits a beta particle, it decays to a daughter with an atomic number ...

www.dummies.com/education/science/chemistry/the-process-of-natural-radioactive-decay

Certain naturally occurring radioactive isotopes are unstable: Their nucleus breaks apart, ... The radioactivity corresponds to the neutron/proton ratio in the atom:.

www.bbc.co.uk/schools/gcsebitesize/science/triple_edexcel/ionising_radiation/radioactive_decay/revision/1

Back. Next. The nuclei of some isotopes are unstable and emit radiation. ... isotopes. Unstable nuclei split up in a process called radioactive decay and emit radioactive radiation. ... A = atomic mass (number of protons + neutrons). Z = atomic ...

www.nde-ed.org/EducationResources/HighSchool/Radiography/radioactivity.htm

Atoms with unstable nuclei are constantly changing as a result of the ... When the nucleus loses a neutron, it gives off energy and is said to be radioactive.

www2.lbl.gov/abc/Basic.html

Mar 30, 2007 ... Nuclear Structure | Radioactivity | Alpha Decay | Beta Decay |Gamma ... The number of protons in the nucleus, Z, is called the atomic number. ... are approximately 270 stable isotopes, and more than 2000 unstable isotopes.

www.chemteam.info/Radioactivity/WS-Radioactivity1-Ans.html

4) The process in which the nuclei of unstable atoms can become more stable by ... of an atom into another kind of atom that takes place during radioactive decay. ... 23) The half-life of a given isotope can be altered by heat, pressure, or some ...