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Hafnium
Hafnium

Technetium
Technetium



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Hafnium
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Technetium

Facts About Hafnium and Technetium

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.
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
1.2 Sources
By-product Zirconium Refining
Made by Bombarding Molybdenum with Deuterons
1.3 History
1.3.1 Who Discovered
Dirk Coster and George de Hevesy
Emilio Segrè and Carlo Perriero
1.3.2 Discovery
In 1922
In 1937
1.4 Abundance
1.4.1 Abundance In Universe
7 * 10-8 %NA
Facts About Thallium
5E-09 0.11
1.5.1 Abundance In Sun
~0.0000001 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.5.2 Abundance In Meteorites
0.00 %NA
Facts About Gold
1.7E-07 22
1.6.1 Abundance In Earth's Crust
0.00 %NA
Facts About Radium
9.9E-12 8.1
1.8.1 Abundance In Oceans
0.00 %NA
Facts About Protactinium
2E-23 1.1
1.9.1 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4