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Ensinger PEI

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Francium, Fr
Categories: Metal; Nonferrous Metal; Pure Element

Material Notes: Fr-223 is the isotope with the longest half-life (22 min). Very little property data is available.

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Chemical PropertiesOriginal ValueComments
Atomic Mass 223Longest-Lived Isotope (1995)
Atomic Number 87
X-ray Absorption Edge 0.12261 ÅK
 0.66537 ÅLI
 0.6929 ÅLII
 0.82529 ÅLIII
Electronegativity 0.70Pauling
Ionic Radius 1.80 ÅCrystal Ionic Radius for Valence +1
 
Thermal PropertiesOriginal ValueComments
Melting Point 27.0 °C
 
Component Elements PropertiesOriginal ValueComments
Francium, Fr 100 %
 
Descriptive Properties
CAS Number7440-73-5

References for this datasheet.

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AMEFr00 / 37

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