The structure of SO2 is a hybrid made up from two resonance structures. The sulfur is the central atom, with one oxygen on each side in a linear formation. The two resonance structures have one double bond between the Sulfur and an Oxygen and the other bond as a single bond. ( O=S-O or O-S=O) In reality, the actual structure is a hybrid, in which the electrons that form the double bond move freely between each oxygen. The best way to show this is to write the structure with two single bonds, and add a dashed line above each of the double bonds. (O-S-O with dashed above). Each bond can be considered 1.5 in magnitude.
1. citric acid (oranges) 2. calcium carbonate (egg shells) 3. caffeine 4. mouthwash 5. sugar 6. ammonia 7. hydrogen peroxide 8. salt 9. bleach 10. rubbing alcohol 11. baking soda 12. drain cleaner 13. glass 14. propane 15. aspirin 16. Borax 17. furniture polish 18. water 19. lemon juice 20. chlorine