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Silver
Silver

Francium
Francium



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Facts About Silver and Francium

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1 Facts
1.1 Interesting Facts
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
1.2 Sources
Earth's crust, Found in Minerals, Ores of metals
Formed by Decay Process, Mining
1.3 History
1.3.1 Who Discovered
Unknown
Marguerite Perey
1.3.2 Discovery
Before 5000 BC
In 1939
1.4 Abundance
1.4.1 Abundance In Universe
6 * 10-8 %NA
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~0.0000001 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.00 %NA
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
0.00 %NA
Facts About Radium
9.9E-12 8.1
1.4.5 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