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Molybdenum
Molybdenum

Calcium
Calcium



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Molybdenum
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Calcium

Facts About Molybdenum and Calcium

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.
  • Calcium ranks 5th rank in the list of earth’s abundance Percentage.
  • It is found in the compound state.
  • Gypsum or calcium sulfate is used as plaster and plaster of paris.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
1.3 History
1.3.1 Who Discovered
Carl Wilhelm Scheele
Humphry Davy
1.3.2 Discovery
In 1778
In 1808
1.4 Abundance
1.4.1 Abundance In Universe
5 * 10-7 %7 * 10-3 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~0.0000009 %~0.007 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.00 %1.10 %
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
0.00 %5.00 %
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
0.00 %1.40 %
Facts About Radium
1E-13 1.4