What is 2nd ionization energy?
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Second ionisation energy is defined by the equation: It is the energy needed to remove a second electron from each ion in 1 mole of gaseous 1+ ions to give gaseous 2+ ions. More ionisation energies. You can then have as many successive ionisation energies as there are electrons in the original atom.
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The second ionization energy is almost ten times that of the first because the number of electrons causing repulsions is reduced.
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