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Radioactivity and Nuclear Stability
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Radioactivity and Nuclear Stability

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Questions and Answers

Which of the following is NOT a type of radioactive decay mentioned in the text?

  • Neutron decay (correct)
  • Alpha decay
  • Gamma decay
  • Beta decay

    • What is the general notation of alpha decay as mentioned in the text?

  • AZX → AZX + 42He
  • AZX → A-4 Z-2Y + 42He (correct)
  • AZX → AZX-4 + 42He
  • AZX → A+4 ZX+4 + 42He

    • What is the reason why ingestion of a substance that undergoes alpha decay is harmful?

  • The alpha particles can damage internal tissues very easily due to their low energy.
  • The alpha particles can damage internal tissues very easily due to their short range. (correct)
  • The alpha particles can damage internal tissues very easily due to their high energy.
  • The alpha particles can damage internal tissues very easily due to their long range.

    • What is the name of the scientist who used alpha decay to study the interior of the atom?

    <p>Ernest Rutherford</p> Signup and view all the answers

    What is the type of radiation emitted by radium during its decay process?

    <p>Alpha radiation</p> Signup and view all the answers

    What is the classification of radioactive decay particles based on?

    <p>Their penetration through material</p> Signup and view all the answers

    What is the fundamental principle considered in the advanced or complete atomic model?

    <p>No two electrons have the same four quantum numbers</p> Signup and view all the answers

    What is the expression for the total energy of the Rutherford atom?

    <p>ET = Ek + Ep = -Ze2 / 8πεo r</p> Signup and view all the answers

    According to Neil Bohr, what is the dependence of the total energy of an atom?

    <p>Orbit dependent</p> Signup and view all the answers

    What is the expression for the energy quantization of an atom?

    <p>ΔE = hf = hc / λ</p> Signup and view all the answers

    What is the process by which the nucleus of an atom seeks stability?

    <p>Intra nuclear spontaneous transformation</p> Signup and view all the answers

    What is the characteristic of the spectral lines observed during the transmission of electrons from one orbit to another?

    <p>Line spectrum</p> Signup and view all the answers

    What happens when an atom has too many protons or neutrons in its nucleus?

    <p>It undergoes beta decay</p> Signup and view all the answers

    What is released in negative beta decay?

    <p>A negatively charged beta particle and an antineutrino</p> Signup and view all the answers

    What is the purpose of releasing a neutrino and an antineutrino in beta decay?

    <p>To conserve energy during the decay process</p> Signup and view all the answers

    What type of decay releases a positively charged beta particle called a positron?

    <p>Positive beta decay</p> Signup and view all the answers

    What is a common occurrence in nuclear reactions?

    <p>Gamma ray production</p> Signup and view all the answers

    What is a characteristic of nuclear reactions compared to chemical reactions?

    <p>They release more energy</p> Signup and view all the answers

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