Periodic Properties

The ________ energy of an atom or molecule is the energy required to remove one mole of electrons from one mole of isolated gaseous atoms or ions.

One 1 2 3 4 5 6 7 8 9
Two 10 11 12 13 14 15
Three 16 17 18 19 20
Four 21 22 23 24 25 26 27
  
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