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Chapter 4:


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  • 1. Open Ended
    30 seconds
    1 pt
    Which of the following options correctly describes the shielding effects in a many-electron systems? a.) Shielding reduces the magnitude of the nuclear charge a given electron experiences. b.) Inner electrons are more effective at shielding outer electrons than electrons in the same level. c.) The shielding effect increases with an increasing number of electrons in a given sublevel. d.) Electrons in the same sublevel do not shield each other from the nucleus. e.) Shielding protects an electron so that it is harder to remove from the atom.
  • 2. Open Ended
    30 seconds
    1 pt
    Which of the following statements correctly describes the changes that occur as we move from left to right across the periodic table? a.) Nuclear charge increases b.) The number of core electrons increases. c.) The nuclear charge felt by the outermost electrons decreases d.) The number of valence electrons increases for representative elements.
  • 3. Open Ended
    30 seconds
    1 pt
    Order the following elements in terms of increasing effective nuclear charge (Zeff) Br Cs K As
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