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Question

What is meant by ionization energy?


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Solution

Ionization energy

  • “It represents the amount of energy required to remove an electron from the valence shell of an isolated gaseous atom (X) in its ground state.”
  • The ionization energy is expressed in unitskJmol-1.
  • Ongoing left to right in a period, generally, the ionization energy increases.
  • On going down the group, generally, the ionization energy decreases.

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