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Hafnium
Hafnium

Curium
Curium



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Hafnium
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Facts About Hafnium and Curium

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1 Facts
1.1 Interesting Facts
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
1.2 Sources
By-product Zirconium Refining
Bombarding Plutonium with Helium Ions
1.3 History
1.3.1 Who Discovered
Dirk Coster and George de Hevesy
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
1.3.2 Discovery
In 1922
In 1944
1.4 Abundance
1.4.1 Abundance In Universe
7 * 10-8 %NA
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~0.0000001 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.00 %NA
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
0.00 %NA
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
0.00 %NA
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4