1. atomic number 47 a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography
  2. atomic number 77 a heavy brittle metallic element of the platinum group
  3. atomic number 49 a rare soft silvery metallic element
  4. atomic number 40 a lustrous grey strong metallic element resembling titanium
  5. atomic number 17 a common nonmetallic element belonging to the halogens
  6. atomic number 43 a crystalline metallic element not found in nature
  7. atomic number 67 a trivalent metallic element of the rare earth group
  8. atomic number 87 a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
  9. atomic number 27 a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
  10. atomic number 41 a soft grey ductile metallic element used in alloys
  11. atomic number 74 a heavy grey-white metallic element
  12. atomic number 97 a radioactive transuranic element
  13. atomic number 37 a soft silvery metallic element of the alkali metal group
  14. atomic number 42 a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel
  15. atomic number 44 a rare polyvalent metallic element of the platinum group
  16. atomic number 45 a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum
  17. atomic number 46 a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry
  18. atomic number 48 a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores
  19. atomic number 57 a white soft metallic element that tarnishes readily
  20. atomic number 4 a light strong brittle grey toxic bivalent metallic element

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