cm29 - Ionic Covalent and Metallic bonding How Elements...

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Ionic, Covalent, and Metallic bonding
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Bond Formation The positive sodium ion and the negative chloride ion are strongly attracted to each other. How Elements Bond 2 This attraction, which holds the ions close together, is a type of chemical bond called an ionic bond .
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Bond Formation The compound sodium chloride, or table salt, is formed. How Elements Bond 2 A compound is a pure substance containing two or more elements that are chemically bonded.
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More Gains and Losses Can elements lose or gain more than one electron? How Elements Bond 2 The element magnesium, Mg, in Group 2 has two electrons in its outer energy level. Magnesium can lose these two electrons and achieve a completed energy level.
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More Gains and Losses Some atoms, such as oxygen, need to gain two electrons to achieve stability. How Elements Bond 2 The two electrons released by one magnesium atom could be gained by a single atom of oxygen.
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