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Tap every statement Hund's rule requires

Exercise and reference answers

Questions
  1. Items
    1. Text
      Each orbital of a subshell gets one electron first
      Matches the category
      Yes
    2. Text
      Pairing waits until all are singly occupied
      Matches the category
      Yes
    3. Text
      No two electrons share four quantum numbers
      Matches the category
      No
    4. Text
      Electrons must fill the highest orbital first
      Matches the category
      No
    Category
    Required by Hund's rule of maximum multiplicity
  2. Items
    1. Text
      No two electrons in an atom share all four quantum numbers
      Matches the category
      Yes
    2. Text
      It limits an orbital to two electrons
      Matches the category
      Yes
    3. Text
      It sets the order of filling subshells
      Matches the category
      No
    4. Text
      It forbids pairing entirely
      Matches the category
      No
    Category
    True of the PAULI exclusion principle

Explanation

Hund's rule is about the ORDER of filling within one subshell. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.
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