Atomic Structure Quiz for Class 9
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Questions and Answers

What is the smallest unit of an element?

  • Atom (correct)
  • Compound
  • Cell
  • Molecule
  • What is the central part of an atom called?

  • Proton
  • Neutron
  • Nucleus (correct)
  • Electron
  • What is the total number of protons and neutrons in an atom called?

  • Atomic number
  • Isotope
  • Mass number (correct)
  • Electron configuration
  • Which scientist is credited with discovering the electron?

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

    Which subatomic particle has a negative charge?

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

    What is the outermost shell of an atom called?

    <p>Valence shell</p> Signup and view all the answers

    What is the term for atoms of the same element with different numbers of neutrons?

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

    What is the term for an atom or molecule with a net electric charge due to the loss or gain of one or more electrons?

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

    How many orbital shells are there in an atom according to the Bohr model?

    <p>4</p> Signup and view all the answers

    What is the term for the process where an atom gains or loses electrons to form charged particles (ions)?

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

    Study Notes

    Atomic structure

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    Description

    Test your knowledge of atomic structure concepts with this quiz designed for Class 9 students. Questions cover topics such as atomic models, subatomic particles, and the periodic table.

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