Isotopes: Atomic Number and Nucleon Numbers Quiz
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Questions and Answers

What is an isotope?

  • An atom with the same atomic number and mass number
  • An atom with the same atomic mass and chemical properties
  • An atom with the same number of protons but different number of neutrons (correct)
  • An atom with the same number of protons and neutrons

    • What is the mass number of an atom?

  • The total number of electrons in the neutral atom
  • The number of protons in the nucleus
  • The total number of protons and neutrons in the nucleus (correct)
  • The number of neutrons in the nucleus

    • What is the atomic number of an element?

  • The number of protons in the nucleus (correct)
  • The number of electrons in the neutral atom
  • The total number of protons and neutrons in the nucleus
  • The total number of electrons in the neutral atom

    • How do isotopes of a given element differ?

    <p>In their atomic masses and chemical properties</p> Signup and view all the answers

    Which type of isotopes are stable and do not undergo radioactive decay?

    <p>Stable isotopes</p> Signup and view all the answers

    What is true about all elements?

    <p>They have isotopes</p> Signup and view all the answers

    Which type of isotopes do not display any sign of decay?

    <p>Stable isotopes</p> Signup and view all the answers

    What is the unique name for hydrogen with one neutron?

    <p>Deuterium</p> Signup and view all the answers

    Which type of isotopes have a stable proton-neutron combination?

    <p>Stable isotopes</p> Signup and view all the answers

    What is the half-life of tritium, a radioisotope of hydrogen?

    <p>12 years</p> Signup and view all the answers

    In which medical imaging technique can radioisotopes be captured?

    <p>Single photon emission computed tomography (SPECT)</p> Signup and view all the answers

    What is the common use of technetium-99m in nuclear medicine?

    <p>Diagnosing thyroid activity</p> Signup and view all the answers

    What type of isotopes are typically used as tracers in nuclear medicine?

    <p>Radioactive isotopes</p> Signup and view all the answers

    What can excessive exposure to radioactive isotopes cause in humans?

    <p>Cancer and birth defects</p> Signup and view all the answers

    What is the unique name for hydrogen with two neutrons?

    <p>Tritium</p> Signup and view all the answers

    What does the term 'half-life' refer to in the context of radioisotopes?

    <p>The time it takes for an isotope to decay halfway</p> Signup and view all the answers

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