• There are four different classes of electron orbitals.
  • These orbitals are determined by the value of angular momentum quantum number.
  • We can apply our knowledge of quantum numbers to describe the arrangement of electrons for a given atom.
  • We look at the four quantum numbers for agiven electron and then assign that electron to a specific orbital.
  • For any value of , a value of  places that electron in an s orbital.
  • This orbital is spherical in shape:.
  • The most complex set of orbital are the f orbitals, which have specific three-dimensional orientations.
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