Atomic Structure and Isotopes
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Questions and Answers

What is the basic composition of an atom?

  • Neutron, photon and electron cloud
  • Electron, proton and quark
  • Proton, neutron and photon
  • Electron, proton and neutron (correct)
  • Which model of the atom introduced the concept of electrons in energy levels?

  • Thomson model
  • Rutherford model
  • Dalton model
  • Bohr model (correct)
  • What is the term for isotopes that are not radioactive?

  • Stable isotopes (correct)
  • Heavy isotopes
  • Unstable isotopes
  • Radioactive isotopes
  • Which scientist proposed the plum pudding model of the atom?

    <p>J.J. Thomson</p> Signup and view all the answers

    What is the main difference between isotopes of the same element?

    <p>Number of neutrons</p> Signup and view all the answers

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