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Holmium
Holmium

Promethium
Promethium



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Holmium
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Promethium

Facts About Holmium and Promethium

1 Facts
1.1 Interesting Facts
  • Holmium metal is very soft and malleable.
  • Holmium metal is well known for its corrosion resistivity.
  • Promethium metal found in Pitchblende.
  • Promethium metal is highly radioactive metal.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
1.3 History
1.3.1 Who Discovered
Marc Delafontaine
Chien Shiung Wu, Emilio Segrè, Hans Bethe
1.3.2 Discovery
In 1878
In 1942
1.4 Abundance
1.4.1 Abundance In Universe
5 * 10-8 %NA
Facts About Thallium
5E-09 0.11
1.1.1 Abundance In Sun
~-9999 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.2.1 Abundance In Meteorites
0.00 %NA
Facts About Gold
1.7E-07 22
1.4.2 Abundance In Earth's Crust
0.00 %NA
Facts About Radium
9.9E-12 8.1
1.4.4 Abundance In Oceans
0.00 %NA
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4