Valence Electrons and Ions Practice You will need a Periodic Table for these practice questions. 1. What is the symbol of a sulfur ion? Question 1 of 12 Loading… 2. What is the symbol of a iodine ion? Question 2 of 12 Loading… 3. What is the symbol of a bromine ion? Question 3 of 12 Loading… 4. What is the symbol of a tellurium ion? Question 4 of 12 Loading… 5. How many occupied electron shells does nitrogen have? 4 3 1 6 2Question 5 of 12 Loading… 6. How many occupied electron shells does antimony have? 6 2 7 5 1Question 6 of 12 Loading… 7. How many occupied electron shells does sodium have? 4 2 5 3 1Question 7 of 12 Loading… 8. How many occupied electron shells does bismuth have? 6 4 7 3 5Question 8 of 12 Loading… 9. How many valence electrons does a neutral atom of lithium have? 1 2 6 7 4Question 9 of 12 Loading… 10. How many valence electrons does a neutral atom of krypton have? 5 1 8 3 4Question 10 of 12 Loading… 11. How many valence electrons does a neutral atom of silicon have? 3 7 5 4 2Question 11 of 12 Loading… 12. How many valence electrons does a neutral atom of magnesium have? 4 2 7 6 8Question 12 of 12 Loading… Loading…