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Francio

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  • 1. 87FrFrancioFranciumMass:223 u[Rn] 7s1Melting point:300 KBoiling point: 950 KDensity:1870 kg/m3discovery:1939Electronegativity of francium is thelowest known and is the second least abundant element in nature.Francium is a highlyradioactive alkali metal reactant decays into astatine,radium,and radon.Like all alkalimetals, has only one electron in its valence shell.Francium was the last chemical element found in nature before being synthesized.There aren´t commercial applications for francium due to its scarcity and instability.Ithas only been used in research,both in the field of biology as the atomic structure.

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