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  1. unknown elements
  2. Radium and Calium
  3. Hydrogen--all other elements
  4. Re: electron Configurations!?!
  5. Sodium--I need help for a project
  6. atomic theory
  7. strontium/sodium
  8. Graduation of elements in the periodic table
  9. Melting point of Li
  10. elements
  11. Chlorine- Facts..Have Any?
  12. naming compounds new/old name
  13. Who Discovered
  14. Physical and chemical properties
  15. Hydrogen a Non Metal
  16. strontium 89
  17. Magnesium Burning
  18. sizes of ions and atoms
  19. Substrate concentration
  20. Mercury
  21. Lithium information please - malleability, ductility, reacti
  22. Grp II - melting points
  23. Iodide Ions
  24. wandering about americium
  25. mercury discovery
  26. am(americium)
  27. Methane
  28. i need help for a project
  29. Sucrose
  30. Structure and Oxidataion no.
  31. why can't halogens occur in elemental state in nature?
  32. Periodic Table fun facts
  33. polarizability of an element
  34. Software for the Periodic Table of Elements
  35. atoms of elements
  36. Mercury
  37. **** Grouping ***
  38. Ions and Elements
  39. question
  40. Please help me how to give oral presentation about periodic!
  41. How would element chlorine change if it lost an electron?
  42. 3rd Ionization of Energy...
  43. Need your help ASAP for an art exhibit on periodic - artygal
  44. Specific Heat question
  45. please help - grams of air
  46. Why do Palladium (Pd)'s electron shells seem different?
  47. Importance of the periodic table.
  48. Periodic Trends Help! I've researched but i don't understand
  49. Oxidation numbers, Electronegativity, & Naming Conventions
  50. Properties of period 3 oxide
  51. lanthanide contraction across the period.... help
  52. xylanase activity
  53. alkali and alkaline earth metals
  54. Why are group I hydrides alkalis?
  55. Stability of molecular hydrides
  56. Will Persil burn green?
  57. element collecter looking for possible trades
  58. Elements whose symbols don't match their names
  59. pereodic table
  60. chemmie's question
  61. lightest to heaviest elements
  62. oxidation state
  63. periodic property
  64. reactivity series
  65. how many atoms!!!
  66. Reducing agent
  67. atomic mass
  68. periodic table of elements
  69. Ionization energy
  70. chemical balance
  71. Balance
  72. Ammonium Salts