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Neptunium
Neptunium

Hafnium
Hafnium



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Neptunium
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Hafnium

Facts About Neptunium and Hafnium

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1 Facts
1.1 Interesting Facts
Not Available
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
1.2 Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
By-product Zirconium Refining
1.3 History
1.3.1 Who Discovered
Edwin McMillan and Philip H. Abelson
Dirk Coster and George de Hevesy
1.3.2 Discovery
In 1940
In 1922
1.4 Abundance
1.4.1 Abundance In Universe
NA7 * 10-8 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~-9999 %~0.0000001 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
NA0.00 %
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
NA0.00 %
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
NA0.00 %
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4