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Hafnium
Hafnium
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Promethium
Promethium
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Hafnium
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Facts About Hafnium and Promethium
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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.
  • Promethium metal found in Pitchblende.
  • Promethium metal is highly radioactive metal.
1.2 Sources
By-product Zirconium Refining
Found in Minerals, Mining
1.3 History
1.3.1 Who Discovered
Dirk Coster and George de Hevesy
Chien Shiung Wu, Emilio Segrè, Hans Bethe
1.3.2 Discovery
In 1922
In 1942
1.4 Abundance
1.4.1 Abundance In Universe
Facts About Iron
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7 * 10-8 %
Rank: 25 (Overall)▶
Not Available
Rank: N/A (Overall)▶
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Facts About Thallium
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1.4.2 Abundance In Sun
Facts About Iron
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~0.0000001 %
Rank: 26 (Overall)▶
~-9999 %
Rank: N/A (Overall)▶
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Facts About Beryllium
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1.4.3 Abundance In Meteorites
Facts About Iron
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0.00 %
Rank: 37 (Overall)▶
Not Available
Rank: N/A (Overall)▶
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Facts About Gold
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1.4.4 Abundance In Earth's Crust
Facts About Alu..
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0.00 %
Rank: 31 (Overall)▶
Not Available
Rank: N/A (Overall)▶
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Facts About Radium
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1.4.5 Abundance In Oceans
Facts About Sod..
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0.00 %
Rank: 27 (Overall)▶
Not Available
Rank: N/A (Overall)▶
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Facts About Protactinium
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1.4.6 Abundance In Humans
Facts About Cal..
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Not Available
Rank: N/A (Overall)▶
Not Available
Rank: N/A (Overall)▶
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Facts About Radium
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