Francium 6. October 2015elementadmin ◄ Rn Au ▲ ▼ Fr Ra ► 87 Fr francium (223) 87 Fr 1 Fr litho Francium ∙ francium ∙ francio ∙ francio group I: R2O melting point: 27°C boiling point: 677°C density: — —
