ionization energy trends - Ionization Energy Trends in the...

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Ionization Energy Trends in the Periodic Table The ionization energy of an atom is the amount of energy  required  to remove an electron from the gaseous  form of that atom or ion. 1 st  ionization energy -  The energy required to remove the highest energy electron from a neutral gaseous atom. For Example: Na (g) Na + (g) + e - I 1 = 496 kJ/mole Notice that the ionization energy is positive. This is because it  requires  energy to remove an electron. 2 nd  ionization energy -  The energy required to remove a  second  electron from a singly charged gaseous cation. For Example: Na + (g) Na 2+ (g) + e - I 2 = 4560 kJ/mole The second ionization energy is almost  ten times  that of the first because the number of electrons causing  repulsions is reduced. 3 rd  ionization energy -  The energy required to remove a  third  electron from a doubly charged gaseous cation. For Example:
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This note was uploaded on 10/13/2011 for the course CHEMISTRY 121 taught by Professor Staff during the Fall '10 term at Bangladesh University of Eng and Tech.

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ionization energy trends - Ionization Energy Trends in the...

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