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Francium Symbol Fr Atomic Number 87 Atomic Mass 223.0197 Family Group 1 (Ia) Alkali Metal Pronunciation FRAN-see-um Overview Francium is an alkali metal, a member of Group 1 (IA) in the periodic table. The periodic table is a chart that shows how...

Francium is an alkali metal element given the atomic symbol Fr. The atomic weight of francium's most stable isotope is 223, its melting point is 80.6°F (27°C), and its boiling point, 1,250.6°F (677°C). Francium is highly unstable and...

Francium is the last member of the alkali metal family, the elements that make up Group 1 of the periodic table. Its atomic number is 87, its atomic mass is 223.0197, and its chemical symbol is Fr. All isotopes of francium are radioactive, with...

Francium (pronounced /ˈfrænsiəm/), formerly known as eka-caesium and actinium K,[1] is a chemical element that has the symbol Fr and atomic number 87. It has the lowest known electronegativity of all known elements, and is the second rarest naturally...