Why does lithium have a higher ionization energy compared to sodium?

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asked Jul 25, 2022 21.5k views

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Dovahkiin · Answer 1 · 2022-07-31T09:20:10+0000

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There are 11 protons in a sodium atom but only 3 in a lithium atom, so the nuclear charge is much greater. ... The only factor left is the extra distance between the outer electron and the nucleus in sodium's case. That lowers the ionization energy.

Why does lithium have a higher ionization energy compared to sodium?

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