Element Francium (Fr), Group 1, Atomic Number 87, s-block, Mass [223]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

Francium is a chemical element; it has symbol Fr and atomic number 87. It is extremely radioactive; its most stable isotope, francium-223 (originally called actinium K after the natural decay chain in which it appears), has a half-life of only 22 minutes.

Francium belongs to alkali group of the periodic table so its physical properties are similar with alkali group elements. Its melting point is about 27 o C and its boiling point is 677 o C, but both have uncertainty due to high radioactivity and is extremely rare in nature. Francium is heaviest known metal of alkali group.

2020年11月21日 · Francium is a 87. chemical element in the periodic table of elements. It has 87 protons and 87 electrons in the atomic structure. The chemical symbol for Francium is Fr.

Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.

Francium is the 87th element in the periodic table and has a symbol of Fr and atomic number of 87. It has an atomic weight of (223) and a mass number of 197. Francium has eighty-seven protons and one hundred ten neutrons in its nucleus, and eighty-seven electrons in seven shells.

2024年9月1日 · Francium element is in group 1 and period 7 of the Periodic table. Francium is the s-block element and it belongs to alkali metals group. Click on above elements (in Periodic table) to see their information. Why is Francium in Group 1?

Francium - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements.

Physical and chemical properties of Francium: general data, thermal properties, ionization energies, isotopes, reduction potentials, abundance of elements, crystallographic data.

Photographs and descriptions of many samples of the element Francium in the Periodic Table.