Ions Worksheet Answers 1. Key: 2. Write the cautions formed by the Alkaline met- Sodium = Na1+ als Lithium = Li1+ Potassium = K1+ 3. What cations are formed by Alkaline metals in 1+ general 4. Write these cations formed by these Alkaline earth metals Calcium = Ca2+ Magnesium = Mg2+ Barium = Ba2+ 5. What cations are formed by Alkaline earth met- 2+ als in general 6. Aluminum has 3 valence electrons. Write the cation for an aluminum ion. Al3+ 7. The halogens have how many valence electrons? 7 8. How many electrons do halogens gain when they form anions? 1 9. Write the halogens formed by the following Fluoride = F1halogens. Anions change the suffix to IDE. An- Chloride = Cl1ions tend to gain electrons. Bromide = Br1Iodine = I110. What anions are formed by the Halogens in general? 1- 11. Oxygen and sulfur have 6 valence electrons. What anions do they form? 2- 12. Write the anions for oxygen and sulfur. Oxide = O2Sulfide = S2- 1/1