Why is the first ionization energy for sodium smaller than the second?

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SUMMARY

The first ionization energy for sodium (Na) is significantly smaller than the second ionization energy due to the differences in electron shell configuration and atomic charge. When sodium loses its first electron, it becomes a positively charged ion (Na+), which results in a stronger electrostatic attraction between the remaining electrons and the nucleus. This increased attraction makes the removal of the second electron more difficult, thereby requiring more energy.

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Pechy
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WHy is the first ionization energy for sodium much smaller than the secon ionization energy for sodium? i don't understand this.
 
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Hi there Pechy and welcome to PF,

Why do you think it is? Think about shell configuration and atomic charge.
 
Shell configuration ??
Atomic charge total is zero ... the ionized sodium is a positive ION.

THAT is the main reason the second electron is much harder to remove ...
for ANY object, not just a sodium atom/ion.
 

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