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Worksheet: Hund's Rules

Q1:

One of the p-orbitals of an unknown element is half filled. Assuming that Hund’s rule is upheld, which of the following elements could not be the unknown element?

  • AGallium
  • BSilicon
  • CIodine
  • DXenon

Q2:

The following term symbols correspond to the ground electronic state of atomic carbon, C . Use Hund’s rule to predict which of these levels is lowest in energy.

  • A 3P2
  • B 1S0
  • C 1D2
  • D 3P0