Find the effective nuclear charge of the outermost electron in sodium using its ionization energy.(adsbygoogle = window.adsbygoogle || []).push({});

Ionization energy of sodium = 5.14 eV = 8.23e-19 J

Zeff = Z - S

I tried using the equation Zeff = Z - S, but when I followed all the rules, I found

S = (8*0.85)+(2*1.00) = 8.8

Zeff = 11 - 8.8 = 2.2

but the answer in my book says that it should be 1.8, and that method didn't use the ionization energy of sodium.I need to find an equation that explains quantitatively how ionization energy relates to Zeff.

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# Calculating Effective Nuclear Charge using Ionization Energy

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