Valence Electrons and Ions Practice You will need a Periodic Table for these practice questions. 1. What is the symbol of a phosphorus ion? Question 1 of 12 Loading… 2. What is the symbol of a arsenic ion? Question 2 of 12 Loading… 3. What is the symbol of a antimony ion? Question 3 of 12 Loading… 4. What is the symbol of a bromine ion? Question 4 of 12 Loading… 5. How many occupied electron shells does zinc have? 4 6 1 2 7Question 5 of 12 Loading… 6. How many occupied electron shells does gold have? 5 1 7 4 6Question 6 of 12 Loading… 7. How many occupied electron shells does cadmium have? 7 3 2 5 1Question 7 of 12 Loading… 8. How many occupied electron shells does argon have? 2 5 3 4 7Question 8 of 12 Loading… 9. How many valence electrons does a neutral atom of astatine have? 3 7 6 2 5Question 9 of 12 Loading… 10. How many valence electrons does a neutral atom of fluorine have? 1 3 7 5 2Question 10 of 12 Loading… 11. How many valence electrons does a neutral atom of carbon have? 2 8 1 5 4Question 11 of 12 Loading… 12. How many valence electrons does a neutral atom of boron have? 7 5 3 2 1Question 12 of 12 Loading… Loading…