Assertion: molybdenum | /r/HasProperty | discovered by carl welhelm scheele
Facets:
value: in 1778
type: TEMPORAL
value: in a mineral
type: LOCATION
Source sentences:
text: Molybdenum was discovered by Carl Welhelm Scheele, a Swedish chemist, in 1778 in a mineral known as molybdenite (MoS 2 ) which had been confused as a lead compound.