Peter Jacob Hjelm Scientist
Peter Jacob Hjelm (2 Oct 1746 - 7 Oct 1813) was a Swedish chemist and the first person to isolate the element molybdenum in 1781, four years after its discovery.
Peter Jacob Hjelm (2 Oct 1746 - 7 Oct 1813) was a Swedish chemist and the first person to isolate the element molybdenum in 1781, four years after its discovery.