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Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: cashsphere on November 08, 2004, 11:27:27 PM

Title: Do elements look the same or different if the isotope is different.
Post by: cashsphere on November 08, 2004, 11:27:27 PM
Do elements with natural occuring isotopes and radioactive isotopes look the same or different? How could you tell what isotope the element is?
Title: Re:Do elements look the same or different if the isotope is different.
Post by: billnotgatez on November 09, 2004, 01:24:51 AM
density
Title: Re:Do elements look the same or different if the isotope is different.
Post by: limpet chicken on November 09, 2004, 01:56:57 AM
Reactivity would also be affected, a least in some instances, for example, deuterium, or heavy hydrogen, is slightly less reactive than ordinary hydrogen (protium), and tritium, the radioactive hydrogen isotope, is heavier, and slightly less reactive still.
Title: Re:Do elements look the same or different if the isotope is different.
Post by: jdurg on November 09, 2004, 11:29:31 AM
Reactivity would also be affected, a least in some instances, for example, deuterium, or heavy hydrogen, is slightly less reactive than ordinary hydrogen (protium), and tritium, the radioactive hydrogen isotope, is heavier, and slightly less reactive still.

This applies to hydrogen, but it may not, and usually does not, apply to heavier elements.  With hydrogen, the addition of a neutron will close to double the mass of the atom, thus affecting how it "moves" around and reacts.  With heavier elements like uranium and lead, the addition of a couple neutrons has almost no effect on the overall mass.  So for the lighter elements, the reactivity may differ a bit.  But for the heavier elements, the difference in reactivity is incredibly small.