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    Atoms and Ions

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    Select the atom or ion in each pair that has the larger radius.
    a) Cs or Rb
    b) Br or As

    What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none." In such cases, explain why "none" is the correct answer.

    a) n=3
    b) n=3 and l=2
    c) n=5, l=0, m=+1

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    Solution Preview

    Select the atom or ion in each pair that has the larger radius.

    a) Cs has the higher atomic radius because of the higher atomic number and more electrons.

    b) Br has the higher atomic radius because of the higher atomic ...

    Solution Summary

    The atom or ion with the larger radius will be the one with the higher atomic number and more electrons. What is the maximum number of electrons that can be identified relate to the number of electrons that can be filled in the available subshells.

    $2.19