×

Hafnium
Hafnium

Roentgenium
Roentgenium



ADD
Compare
X
Hafnium
X
Roentgenium

Facts About Hafnium and Roentgenium

Facts

Interesting Facts

Sources

Who Discovered

Discovery

Abundance In Universe

Abundance In Sun

Abundance In Meteorites

Abundance In Earth's Crust

Abundance In Oceans

Abundance In Humans

 
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
By-product Zirconium Refining
Dirk Coster and George de Hevesy
In 1922
0.00 %
0.00 %
0.00 %
0.00 %
0.00 %
0.00 %
 
Roentgenium is a highly unstable synthetic element.
Synthetically Produced
Gesellschaft für Schwerionenforschung
In 1994
0.00 %
-
-
-
-
-