Why is it easier to remove an electron from a sodium atom than a magnesium atom

1 answer:

5 0

It doesn't take much energy to remove one electron from a sodium atom to form an Na+ ion with a filled-shell electron configuration. The first ionization energy of magnesium is larger than sodium because magnesium has one more proton in its nucleus to hold on to the electrons in the 3s orbital.

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Hope it helps...

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