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Isotopes are
distinct nuclear species (or nuclides) of the same
chemical element. They have the same
atomic number (number of
protons in
their nuclei)...
- Look up
Isotope or
isotope in Wiktionary, the free dictionary.
Isotopes are any of the
several different forms of an
element each
having different atomic...
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naturally occurring isotopes: 1H, 2H, and 3H. 1H and 2H are stable,
while 3H has a half-life of 12.33(2) years.
Heavier isotopes also exist; all are synthetic...
- constant#Effect of
isotopic substitution Isotopic shift,
effect of
isotopic substitution on
spectroscopy Kinetic isotope effect,
effect of
isotopic substitution...
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There are 39
known isotopes of
radon (86Rn), from 193Rn to 231Rn; all are radioactive. The most
stable isotope is 222Rn with a half-life of 3.8235 days...
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observationally stable isotopes: 204Pb, 206Pb, 207Pb, 208Pb. Lead-204 is
entirely a
primordial nuclide and is not a
radiogenic nuclide. The
three isotopes lead-206...
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Helium (2He) (standard
atomic weight: 4.002602(2)) has nine
known isotopes, but only helium-3 (3He) and helium-4 (4He) are stable. All
radioisotopes are...
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Naturally occurring vanadium (23V) is
composed of one
stable isotope 51V and one
radioactive isotope 50V with a half-life of 2.71×1017 years. 24 artificial...
- one of its
isotopes. Formally, it is the
ratio of rate
constants for the
reactions involving the
light (kL) and the
heavy (kH)
isotopically substituted...
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Isotope geochemistry is an
aspect of
geology based upon the
study of
natural variations in the
relative abundances of
isotopes of
various elements. Variations...
