English Wikipedia - The Free Encycl...
Download this dictionary
Peter Jacob Hjelm
Peter (Petter) Jacob Hjelm
(2 October 1746 – 7 October 1813) was a Swedish chemist and the first person to isolate the element
molybdenum
in 1781, four years after its discovery.
See more at Wikipedia.org...
© This article uses material from
Wikipedia
®
and is licensed under the
GNU Free Documentation License
and under the
Creative Commons Attribution-ShareAlike License