Electron Transfer and Ionic Bonding The classic demonstration of this process is the reaction between sodium and chlorine. The removal of the negatively charged electron leaves the ion with an overall positive charge because the number of protons (11) now exceeds the number of electrons (10).
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This solitary valence electron is the key to sodium's chemical personality, sitting far from the nucleus and experiencing a weak effective nuclear charge, which makes it incredibly easy to remove. A sodium atom transfers its valence electron to a chlorine atom, which desperately needs one electron to complete its own valence shell.
Why Sodium Loses an Electron The driving force behind sodium's reactivity is its desperate pursuit of stability, specifically the stable electron configuration of a noble gas. The energy required to remove this electron is relatively low, explaining why sodium readily donates it to other elements.
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This transformation results in a positively charged sodium ion (Na⁺) with a complete outer shell of eight electrons, a state of lower energy and greater stability. The Sodium Ion: A Cation Forged in Loss Once the electron is lost, the sodium atom is no longer neutral; it becomes a sodium cation, Na⁺.
More About Electrons in sodium ion
Looking at Electrons in sodium ion from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Electrons in sodium ion can make the topic easier to follow by connecting earlier points with a few simple takeaways.
