Atomic Structure and Electric Charges Quiz
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Questions and Answers

Which particles are found in the nucleus of an atom?

  • Protons and electrons
  • Electrons and neutrons
  • Protons, neutrons, and electrons
  • Protons and neutrons (correct)
  • What is the most precise value of the mass of a proton?

  • 1.67262171 x 10-27 kg (correct)
  • 9.1093826 x 10-31 kg
  • 1.67492728 x 10-27 kg
  • 1.60217653 x 10-19 C
  • What is the most precise value of the mass of an electron?

  • 1.60217653 x 10-19 C
  • 9.1093826 x 10-31 kg (correct)
  • 1.67262171 x 10-27 kg
  • 1.67492728 x 10-27 kg
  • What is the most precise value of the magnitude of the charge of an electron or a proton?

    <p>1.60217653 x 10-19 C</p> Signup and view all the answers

    Where is the majority of the mass of an atom concentrated?

    <p>In the nucleus</p> Signup and view all the answers

    Which of the following statements about calculating radioisotope activity using the concept of half-life is most correct?

    <p>The half-life of a radioisotope is the time it takes for half of the atoms in a sample to decay.</p> Signup and view all the answers

    Which of the following is a correct application of the concept of half-life in calculating radioisotope activity?

    <p>Measuring the amount of radiation emitted by a radioisotope in a given time period.</p> Signup and view all the answers

    Which of the following is a common misconception about calculating radioisotope activity using the concept of half-life?

    <p>The half-life of a radioisotope can be used to determine the initial amount of the radioisotope in a sample.</p> Signup and view all the answers

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