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francium - Reference Center

Francium [from France], radioactive chemical element; symbol Fr; at. no. 87; mass no. of most stable isotope 223; m.p. about 27°C (estimated); b.p. 677°C (estimated); sp. gr. unknown; valence +1. Francium is extremely rare; its most stable isotope... more

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  • Francium

    Dec 15, 2003 ... Francium, the heaviest known member of the alkali metals series, occurs as a result of an alpha disintegration of actinium. ...

    periodic.lanl.gov/elements/87.html - Similar

  • YouTube - Francium explosion test in the ocean

    Its a pity its not Francium though. Apparently there is only ever about 30g of it in existence, in the whole world, which is a pity, as i'd love to get ...

    www.youtube.com/watch?v=SjowQJMS-W4 - Similar

  • Periodic Table of Elements: Francium - Fr (EnvironmentalChemis...

    Feb 22, 2007 ... Comprehensive information for the element Francium - Fr is provided by this page including scores of properties, element names in many ...

    environmentalchemistry.com/yogi/periodic/Fr.html - Similar

  • Francium

    Francium is the heaviest of the alkali metals and closely resembles cesium in its chemical properties. It is the most electropositive element. ...

    hyperphysics.phy-astr.gsu.edu/hbase/pertab/Fr.html - Similar

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