Why is the first electron in sodium the easiest to remove?
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The first Electron in sodium the thé easiest to move because that Electron is farthest from the nucleus.
The nucleus being positively charged attracts the negatively charged Electron and this force is inversely proportional to the distance between the nucleus and Electron (Coulomb's law). This means that if the distance between the electron and nucleus is more then the attraction force which exists between them will be less.
The first Electron being the farthest is not attracted with a strong force and so it's easy to be removed
The nucleus being positively charged attracts the negatively charged Electron and this force is inversely proportional to the distance between the nucleus and Electron (Coulomb's law). This means that if the distance between the electron and nucleus is more then the attraction force which exists between them will be less.
The first Electron being the farthest is not attracted with a strong force and so it's easy to be removed
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