Valence Electrons and Ions Practice You will need a Periodic Table for these practice questions. 1. What is the symbol of a arsenic ion? Question 1 of 12 Loading… 2. What is the symbol for a potassium ion? Question 2 of 12 Loading… 3. What is the symbol of a oxygen ion? Question 3 of 12 Loading… 4. What is the symbol of a aluminum ion? Question 4 of 12 Loading… 5. How many occupied electron shells does fluorine have? 1 8 6 2 3Question 5 of 12 Loading… 6. How many occupied electron shells does aluminium have? 5 1 7 2 3Question 6 of 12 Loading… 7. How many occupied electron shells does phosphorus have? 6 4 1 3 7Question 7 of 12 Loading… 8. How many occupied electron shells does chlorine have? 1 6 3 4 7Question 8 of 12 Loading… 9. How many valence electrons does a neutral atom of tin have? 2 1 4 7 6Question 9 of 12 Loading… 10. How many valence electrons does a neutral atom of bismuth have? 7 5 4 1 8Question 10 of 12 Loading… 11. How many valence electrons does a neutral atom of fluorine have? 3 5 4 1 7Question 11 of 12 Loading… 12. How many valence electrons does a neutral atom of lead have? 3 4 1 2 7Question 12 of 12 Loading… Loading…