Francium

http://en.wikipedia.org/wiki/Francium (Rank: 581363)

http://www.chemicalelements.com/elements/fr.html (Rank: 1384151)

http://education.jlab.org/itselemental/ele087.html (Rank: 1466055)

http://www.lenntech.com/Periodic-chart-elements/Fr-en.htm (Rank: 1638425)

http://periodic.lanl.gov/elements/87.html (Rank: 2161149)

http://environmentalchemistry.com/yogi/periodic/Fr.html (Rank: 2306732)

http://www.chemsoc.org/viselements/pages/francium.html (Rank: 2390828)

http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/87.html (Rank: 2824277)

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