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Across
  1. 5. Stability due to delocalized π electrons
  2. 6. Contains chlorine atom
  3. 7. Three-ring aromatic compound
  4. 8. Contains iodine atom
  5. 10. Compound with halogen atoms
  6. 11. Contains bromine atom
  7. 12. Simplest aromatic hydrocarbon
  8. 14. Reaction increasing oxygen or decreasing hydrogen
  9. 16. Delocalization of electrons across structure
  10. 18. Ion CN⁻, toxic compound
  11. 19. Contains –C≡N group
  12. 21. Aromatic hydrocarbon
  13. 23. Two-ring aromatic compound
  14. 24. Contains fluorine atom
Down
  1. 1. Reaction adding atoms across double bond
  2. 2. Reaction replacing one atom with another
  3. 3. Common solvent ester
  4. 4. Isomer of anthracene
  5. 5. Hydrocarbon derivative with halogen
  6. 9. Reaction removing atoms to form double bond
  7. 13. Product of alcohol and acid reaction
  8. 15. Formed from acid and amine
  9. 17. Derivative of ammonia with alkyl groups
  10. 20. Methylbenzene solvent
  11. 22. Dimethylbenzene isomer mixture