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Hafnium
Hafnium

Californium
Californium



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Hafnium
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Californium

Facts About Hafnium and Californium

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.
  • Californium metal is very harmful and highly radioactive.
  • Californium metal is the heaviest metal.
1.2 Sources
By-product Zirconium Refining
Made by Bombarding Curium with Helium Ions
1.3 History
1.3.1 Who Discovered
Dirk Coster and George de Hevesy
Lawrence Berkeley National Laboratory
1.3.2 Discovery
In 1922
In 1950
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