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Hafnium
Hafnium

Strontium
Strontium



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Hafnium
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Strontium

Facts About Hafnium and Strontium

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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.
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
1.2 Sources
By-product Zirconium Refining
Found in Minerals, Mining, Ores of Minerals
1.3 History
1.3.1 Who Discovered
Dirk Coster and George de Hevesy
William Cruickshank
1.3.2 Discovery
In 1922
In 1787
1.4 Abundance
1.4.1 Abundance In Universe
7 * 10-8 %4 * 10-6 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~0.0000001 %~0.000005 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.00 %0.00 %
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
0.00 %0.04 %
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
0.00 %0.00 %
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NA0.00 %
Facts About Radium
1E-13 1.4