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isotope

isotope

45 6.5
A form of a chemical element with the same number of protons but more or fewer neutrons in the nucleus
  • noun
  • /ˈaɪsəˌtoʊp/
  • Specialized
translation icon : isótopo
  • In chemistry class, we learned that an isotope of hydrogen, known as deuterium, has one neutron.
  • stable isotopes
  • radioactive isotope
  • isotope ratio

Now how do we do this by lead isotope and how is this actually carried out?

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Examples

  • However, some combinations of protons and neutrons, known as isotopes, remain unstable or radioactive.

  • Methods for sampling isotope enrichment in different compartments range from noninvasive to destructive.

    Academic text (2011)
  • So if you measure the isotope ratio, you can find out whether the stuff came from their plants.

  • And we can tell this by the stable isotope analysis of their baby teeth, which we have found.

  • From studies of the 10 Be isotope, the cosmic ray lifetime also appears secure.

    Academic text (1990)
  • But first they actually have to get the isotope, and that's not easy.

  • How big a problem is the fact that the isotopes on the Earth and the moon are identical?

  • How can isotopes tell you something about gas flow through very challenging rocks?

  • And here we use medical isotopes and make tracers for imaging and therapy.

  • Elemental tritium, an isotope of hydrogen, is a gas, which poses problems of safety and practicality.

    Academic text (2012)

Synonyms

nuclide
vsisotope
  • Specialized
1 8.7

An atom with a specific number of protons and neutrons

refers to different atoms with same proton number but varying neutron counts

Surface Forms

isotope singular
isotopes plural

Morphology

isotope = iso + tope

The word is formed from bound Greek combining forms (iso- + -tope) that are not standalone English words, so learners cannot reliably infer the meaning from the parts.

Etymology

Isotope comes from the Greek parts iso- meaning 'equal' and -topos meaning 'place', because different forms of an element sit in the same place on the periodic table. So, isotopes are versions of the same element with the same number of protons but different numbers of neutrons, which gives them different mass.