• The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas.
  • An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.
  • Atoms of metals tend to lose all of their valence electrons, which leaves them with an octet from the next lowest principal energy level.
  • Atoms of non
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