Ions-WS-1

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                                          Ions WS
   1. Cations
         a. are (metal or nonmetals).
         b. obtain an octet by (gaining or losing) electrons.
         c. are (positively or negatively) charged ions.
   2. Anions
         a. are (metals or nonmetals).
         b. obtain an octet by (gaining or losing) electrons.
         c. are (positively or negatively) charged ions.

Directions: Give the electron configuration for the following atoms or ions.
   3. Li                                              13. O-2

   4. Li+1                                             14. Ni

   5. Br                                               15. Ni+2

   6. Br-1                                             16. Cr

   7. Zn                                               17. Cr+1

   8. Zn+2                                             18. Al

   9. Fe                                               19. Al+3

   10. Fe+2                                            20. Ag

   11. Fe+3                                            21. Ag+1

   12. O

Circle the ion in each pair that has the smallest radius.
           a. Na+ or Li+                                        d. Na+   or Mg+2 or F-

           b. Se-2 or S-2                                       e. Rb+1 or Br-

           c. Cl- or S-2

Circle the atom/ion that is larger.
       23. Na+1 or K+1                   25. K+1 or Cl-1

       24. F-1 or O-2                    26. O–2 or S-2

Name the following ions.
      27. Ca+2                           29. Co+2                           31. Cu+3

       28. O–2                           30. Cu+2                           32. Fe+2
                                           Polyatomic Ions

       Polyatomic ions-



       Circle the polyatomic ions in the list below.

       Acetate                            Iron (II)                         Perchlorate
       Aluminum                           Iron (III)                        Permanganate
       Ammonium                           Magnesium                         Phosphate
       Carbonate                          Mercury (I)                       Rubidium
       Chlorate                           Nitrate                           Sodium
       Chloride                           Nitride                           Sulfate
       Chlorite                           Nitrite                           Sulfide
       Chromate                           Oxalate                           Sulfite
       Hydroxide                          Oxide



Most metallic elements occur naturally as minerals. Listed below are some common names of
minerals and their chemical formulas. Complete the table with the formulas for the ions and the
IUPAC names of the minerals.
  Mineral       Formula Positive Ion Negative Ion                      IUPAC Name

 Anhydrite        CaSO4

   Barite         BaSO4

   Calcite        CaCO3

 Cassiterite       SnO2

 Corundum          Al2O3

   Cuprite         Cu2O

  Fluorite         CaF2

Smithsonite       ZnCO3

  Witherite       BaCO3

				
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posted:11/21/2011
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