Ionization Energy Concept
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Ionization Energy Concept

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Questions and Answers

What is ionization energy?

  • The energy released when an electron is added to an atom
  • The minimum energy needed to remove a valence electron (correct)
  • The amount of energy required to add a valence electron
  • The energy released when an electron is removed from an atom

    • Why does ionization energy increase across a period?

  • As the number of electron shells increases (correct)
  • Because the distance between the nucleus and electrons decreases
  • Due to a decrease in the number of protons
  • Because the negative force on electrons weakens

    • Which element would likely have the highest ionization energy?

  • Neon (Group 8a) (correct)
  • Sodium (Group 1)
  • Phosphorus (Group 5)
  • Oxygen (Group 6)

    • Why does ionization energy decrease going down a group?

    <p>Increase in the number of electron orbitals</p> Signup and view all the answers

    Which element would have lower ionization energy, lithium or cesium?

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

    What is the definition of ionization energy?

    <p>The minimum amount of energy required to remove the outermost electron in the electron cloud of an atom.</p> Signup and view all the answers

    Why are valence electrons more easily removed compared to inner electrons?

    <p>Valence electrons are more influenced by the atom's nucleus.</p> Signup and view all the answers

    Which factor causes it to become increasingly difficult to remove electrons from an atom?

    <p>Decreasing positive charge on the nucleus.</p> Signup and view all the answers

    How is ionization energy measured?

    <p>In kilojoules per mole.</p> Signup and view all the answers

    Why does an ion with a higher positive charge have a tighter hold on its remaining electrons?

    <p>It gains more protons in its nucleus.</p> Signup and view all the answers

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