Which Happened First?

Discovery of cobalt

Discovery of cobalt
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Cobalt is a chemical element; it has symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron.

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Which happened first?

Timeline

  1. Discovery of cobalt (this page)1735
  2. Discovery of nickel1751
  3. Discovery of magnesium1755
  4. Discovery of hydrogen1766
  5. Discovery of nitrogen1772
  6. Discovery of oxygen1774

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