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Neptunium
Neptunium

Francium
Francium



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Neptunium
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Francium

Facts About Neptunium and Francium

1 Facts
1.1 Interesting Facts
Not Available
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
1.2 Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
Formed by Decay Process, Mining
1.3 History
1.3.1 Who Discovered
Edwin McMillan and Philip H. Abelson
Marguerite Perey
1.3.2 Discovery
In 1940
In 1939
1.4 Abundance
1.4.1 Abundance In Universe
NANA
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~-9999 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
NANA
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
NANA
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
NANA
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4