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Ionic Bond

Ionic Bond. Chapter 5 Section 2. Ions. Ion - Is an atom or group of atoms that has an electric charge When an atom loses an electron it becomes positively charged. When an atom gains an electron it becomes negatively charged.

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Ionic Bond

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  1. Ionic Bond Chapter 5 Section 2

  2. Ions • Ion- Is an atom or group of atoms that has an electric charge • When an atom loses an electron it becomes positively charged. • When an atom gains an electron it becomes negatively charged. • Polyatomic ions are ions that are made of more than one atom, and they have an overall positive or negative charge.

  3. Ionic bonds are formed as a result of attraction between positive and negative ions. • Ionic compounds consists of positive and negative ions example: Sodium Chloride NaCl

  4. Chemical Formulas and Names • Ionic compounds are made up of a metal and a nonmetal • To write the formula of an ionic compound you must make sure the compound’s overall charge is zero. (listen to explanation). • To name an ionic compound you should name the positive ion first followed by the name of the negative ion. Example: Magnesium Oxide. Notice the ending of negative ion it is always -ide

  5. Properties of Ionic Compounds • 1. Hard, brittle solids • 2. Have high melting points • 3. They make a three dimensional pattern called crystal or crystal lattice. • 4. Solutions of ionic compounds conduct electric current.

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