Painful Periodic Table of Elements

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Across
  1. 5. crystalline structure, becomes liquid very easily, soft metal
  2. 7. brittle, used in rat poisons and insecticides, silver-grey
  3. 9. hard but brittle metal, oxidizes easily, can be burned when it's a powder
  4. 10. reactive in oxygen, neutron detectors, exists in several oxidation states
  5. 16. oxidizes when exposed to air, soft, heaviest member of alkaline-earth
  6. 18. jewelry, malleable, high melting point, heavy but soft metal
  7. 19. transition metal, white pigment for paints, lipsticks
Down
  1. 1. has a melting point at 44.1 degrees C, glows in the dark, fertilizers
  2. 2. colorless and odorless, insipid gas, used in ammonia, rocket fuels
  3. 3. lightest halogen, pale yellow gas, toxic
  4. 4. can be dissolved, medical treatments, printing inks and dyes
  5. 6. dense metal,tarnishes rapidly, nuclear energy
  6. 8. silvery but turns yellow when tarnished, used in nuclear weapons, can self-generate a nuclear reaction
  7. 11. colorless and tasteless gas, orange color in a vacuum chamber, noble gas
  8. 12. forms hydroxide in water, soft metal, sold in countries that permit it as a pesticide
  9. 13. can be magnetized, stable in air, used in many alloys
  10. 14. oxidizes slowly, can be dissolved, found in stainless steel and aluminium alloys
  11. 15. glows in the dark due to radioactivity, was discovered by a French chemist (Friedrich Otto Giesel), chemical behavior similar to lanthanum
  12. 17. odorless and colorless and tasteless, flash lamps, arc lamps