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Protactinium
Protactinium

Calcium
Calcium



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Protactinium
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Facts About Protactinium and Calcium

1 Facts
1.1 Interesting Facts
  • Protactinium metal has 29 isotopes.
  • Isotopes of Protactinium-231 used in nuclear weapon.
  • 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 Uranium Ores, Mining, Ores of metals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
1.3 History
1.3.1 Who Discovered
William Crookes
Humphry Davy
1.3.2 Discovery
In 1900
In 1808
1.4 Abundance
1.4.1 Abundance In Universe
NA7 * 10-3 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~-9999 %~0.007 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
NA1.10 %
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 %
Tin
2E-23 1.1
1.4.6 Abundance In Humans
NA1.40 %
Facts About Radium
1E-13 1.4