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Ions!

Ions!. Charged particles…. Atoms can form ions by gaining or losing electrons. Metals tend to lose one or more electrons to form positive ions called cations Metal ions are usually named by using the name of the parent atom The name of the cation shown in this slide is the “ Sodium Ion ”.

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Ions!

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  1. Ions! Charged particles…

  2. Atoms can form ions by gaining or losing electrons • Metals tend to lose one or more electrons to form positive ions called cations • Metal ions are usually named by using the name of the parent atom • The name of the cation shown in this slide is the “Sodium Ion”

  3. Atoms can form ions by gaining or losing electrons • Non-metals tend to gain one or more electrons to form negative ions called anions. • These are named by using the root of the atom name followed by the suffix –ide • The ion shown on this slide is called the Fluoride Ion

  4. We can predict what ions will form • The ion that an atom will form can be predicted from the atom’s position on the periodic table • Metals (on the left hand side of the periodic table) will GIVE UP electrons to form positively charged cations • Nonmetals (on the right hand side of the periodic table) will GAIN electrons to form negatively charged anions

  5. We can predict what ions will form • Group 1 atoms form 1+ cations (they lose 1 electron) • Group 2 atoms form 2+ cations (they lose 2 electrons) • Group 7 atoms form anions with 1- charges (they gain 1 electrons) • Group 6 atoms from anions with 2- charges (they gain 2 electrons)

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