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FR
(redirected from francium)

    Also found in: Dictionary/thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
FR
The two-character ISO 3166 country code for FRANCE.


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? Mentioned in ? References in periodicals archive
 
At number 87 in the periodic table, francium is the least stable of the first 103 elements.
Creating, cooling, trapping francium atoms by Peterson, Ivars / Science News
A Cerium (Ce) B Sulfur (S) C Zirconium (Zr) D Francium (Fr) B.
It's your choice by Science World
To study subtle nuclear effects, the researchers hope to use the same method to trap francium atoms, which exist only as short-lived, intensely radioactive isotopes.
Cold traps for 'hot' atoms by Peterson, Ivars / Science News
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