SOME BASIC FACTS ABOUT CHEMISTRY

  1. Highest electronegative element → F (Fluorine)
  2. Lowest electronegative element → Cs (Cesium)
  3. Highest electron affinity            →   Cl (Chlorine)
  4. Lowest electron affinity            →   Noble gases
  5. Most electropositive stable element → Cs(cesium)
  6. Least electropositive element →       F(Fluorine)
  7. Highest ionization potential →       He(helium)
  8. Lowest ionization potential →      Cs(Cesium)
  9. Largest atomic radius →             Cs (Cesium) 
  10. Smallest atomic radius   →        H (Hydrogen)
  11. Largest anionic radius → I- (Iodide ion)
  12. Smallest anionic radius → H- (Hydride ion)
  13. Largest cationic radius →
  14. Smallest cationic radius → H+ (Hydrogen ion)
  15. Highest melting point metal → W (Tungsten)
  16. Lowest melting point metal → Hg (Mercury)
  17. Highest boiling point metal / element → W (Tungsten)
  18.  Lowest boiling point metal → Hg (Mercury)
  19. Highest melting point non-metal → C (carbon)
  20. Lowest melting point non-metal/element → He (Helium)
  21. Lightest element → H (hydrogen)
  22. Heaviest naturally occurring elements → U (Uranium)
  23. Notorious element  →  H (Hydrogen)
  24. Second most electronegative element → O (Oxygen)
  25. Most abundant element in earth crust → O (oxygen)

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