Assertion: hafnium | /r/HasProperty | one of the last elements
Facets:
value: with stable isotopes
type: OTHER
Source sentences:
text: Given the difficulties in recovering the metal, it may come as no surprise that hafnium was one of the last elements to be discovered.
text: Hafnium was the next-to-last stable element to be discovered, with Re, identified 2 years later in 1925, being the last.
text: Since rhenium was discovered in 1908, hafnium was the last element with stable isotopes to be discovered.
text: Given the difficulties in recovering the metal, it may come as no surprise that hafnium was one of the last elements to be discovered.