How does ionization energy change from left to right on a period?

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Sandy

Chemistry

6 September, 22:19

How does ionization energy change from left to right on a period?

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Rachael Downs · Answer 1

As the atomic radius decreases, it becomes harder to remove an electron that is closer to a more positively charged nucleus. They experience a weaker attraction to the positive charge of the nucleus. Ionization energy increases from left to right in a period and decreases from top to bottom in a group.