Ionization energy or ionization potential is the energy required to completely remove an electron from gases atom or ion. The closer and more tightly bound an electron is to the nucleus, the more difficult will be to remove. the higher its ionization energy will be.
Group one elements have low ionization energy because the loss of an electron from a stable octet.
- The first ionization energy is the energy required to remove one electron from the parent atom.
- Second ionization energy is the energy required to remove second valence electron from the divalent ion and so on.Successive ionization energy increases.
Group one elements have low ionization energy because the loss of an electron from a stable octet.
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