Credit: INTELECOM /SCIENCE PHOTO LIBRARY

Caption: Chloride and magnesium achieve valence stability by forming Magnesium Chloride. Magnesium has 2 valence electrons and is therefore unstable. To gain stability, magnesium will lose two electrons leaving the new valence shell full. This will result in magnesium forming an ion with a plus 2 charge. On the other hand, chloride atoms have seven valence electrons and will tend to gain a single electron to fill their valance shell, resulting in an ion with a minus 1 charge. Positively charged ions are attracted to negatively charged ions to gain neutrality. In this example, one magnesium ion will pair with 2 chloride ions to produce a molecule of the neutral salt magnesium chloride.

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Keywords: atom, chemical bond, chloride, electron, magnesium, magnesium chloride, mgcl2, neutron, proton, valence shells

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Valence stability

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