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Potassium
Potassium

Hafnium
Hafnium



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Hafnium

Facts About Potassium and Hafnium

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1 Facts
1.1 Interesting Facts
  • In the list of most abundant element Potassium is ranked 7th.
  • Potassium can easily be sliced (chopped) down using knife.
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
1.2 Sources
Found in Minerals, Mining
By-product Zirconium Refining
1.3 History
1.3.1 Who Discovered
Humphry Davy
Dirk Coster and George de Hevesy
1.3.2 Discovery
In 1807
In 1922
1.4 Abundance
1.4.1 Abundance In Universe
3 * 10-4 %7 * 10-8 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~0.0004 %~0.0000001 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.07 %0.00 %
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
1.50 %0.00 %
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
0.04 %0.00 %
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
0.20 %NA
Facts About Radium
1E-13 1.4