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Molybdenum
Molybdenum

Polonium
Polonium



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Molybdenum
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Polonium

Facts About Molybdenum and Polonium

1 Facts
1.1 Interesting Facts
  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  • Polonium was the first radioactive element to be discovered.
  • Polonium element and its compounds are highly radioactive.
  • Its alloy with Beryllium provides source of neutrons.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Mining, Ores of metals
1.3 History
1.3.1 Who Discovered
Carl Wilhelm Scheele
Pierre Curie and Marie Curie
1.3.2 Discovery
In 1778
In 1898
1.4 Abundance
1.4.1 Abundance In Universe
5 * 10-7 %NA
Facts About Thallium
5E-09 0.11
1.4.3 Abundance In Sun
~0.0000009 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.4.5 Abundance In Meteorites
0.00 %NA
Facts About Gold
1.7E-07 22
1.4.7 Abundance In Earth's Crust
0.00 %NA
Facts About Radium
9.9E-12 8.1
1.4.10 Abundance In Oceans
0.00 %0.00 %
Facts About Protactinium
2E-23 1.1
1.4.12 Abundance In Humans
0.00 %NA
Facts About Radium
1E-13 1.4