Explain why successive ionization energies of an element increase

More energy is required to remove successive electrons from an ion with an increasing positive charge. There is large increases in ionization energy when the 2nd and 10th electrons are removed. This means that the 1st electron is further from the nucleus than the 2nd election; and the 9th further than the 10th, these large increases indicate changes in main energy levels.

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Answered by Roisin N. Chemistry tutor

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