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i·so·tope
[ahy-suh-tohp]
NOUN [CHEMISTRY.]
1.
any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive isotopes, and every element has known isotopic forms. Isotopes of a single element possess almost identical properties.
Source: Dictionary.com
isotopes | Define isotopes at Dictionary.com
dictionary.reference.com/browse/isotopes
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en.wikipedia.org/wiki/Isotope

Isotopes are variants of a particular chemical element which differ in neutron number. All isotopes of a given element have the same number of protons in each ...

www.milb.com/index.jsp?sid=t342

Coverage includes Albuquerque Isotopes tickets, scores, stats, news and more.

www.milb.com/schedule/index.jsp?sid=t342

The Official Site of the Albuquerque Isotopes ... Schedule; Stats & Scores; Roster; Multimedia; News; Isotopes Park; Fan Zone; Community; Contact Us; Pro Shop.

www.britannica.com/science/isotope

isotope: one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical ...

www.chem4kids.com/files/atom_isotopes.html

Chem4Kids.com! This tutorial introduces the basics of isotopes. Other sections include matter, elements, the periodic table, reactions, and biochemistry.

www.khanacademy.org/science/chemistry/atomic-structure-and-properties/introduction-to-the-atom/v/atomic-number-mass-number-and-isotopes

There isn't any set number of isotopes an atom can have. As the number of neutrons in an atom increases or decreases, the isotopes tend to become more and ...

www.ducksters.com/science/chemistry/isotopes.php

Kids learn about the science of isotopes in chemistry including naming isotopes, hydrogen, examples, fun facts, unstable, and stable.

www.ask.com/youtube?q=Isotopes&v=EboWeWmh5Pg
Jan 7, 2012 ... To see all my Chemistry videos, check out http://socratic.org/chemistry We'll learn about what isotopes are and how to write atomic number and ...