Element 87 of Periodic table is
Francium with atomic number 87,
atomic weight 223.
Francium, symbol Fr, has a
Body Centered Cubic structure and Silver color.
Francium is a alkali metal element.
Trivial name of Francium is alkali metals*.
Know everything about Francium Facts, Physical Properties, Chemical
Properties, Electronic configuration, Atomic and Crystal Structure.
Francium is a chemical element with symbol Fr and atomic number 87. It used to be known as eka-caesium and actinium K. It is the second-least electronegative element, behind only caesium. Francium is a highly radioactive metal that decays into astatine, radium, and radon.
Read key information and facts about element Francium
Explore our interactive periodic table
Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of
The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and
ends at bottom right (atomic number 118). Therefore you can directly look for atomic number
87 to find Francium on periodic table.
Another way to read periodic table and locate an element is by using group number (column)
and period number (row). To locate Francium on periodic
table look for cross section of group 1 and period
7 in the modern periodic table.
Interactive Periodic Table to Understand
and Learn Cool Trends
The element Francium was discovered by Marguerite Perey in year
1939 in France
derived its name from Francia, the New Latin name for France
The table below shows the abundance of Francium in Universe, Sun, Meteorites,
Earth's Crust, Oceans and Human Body.
The solid state structure of Francium is Body Centered Cubic.
The Crystal structure can be described in terms of its unit Cell. The unit Cells repeats itself in
dimensional space to form the structure.
The unit cell is represented in terms of its lattice parameters, which are the lengths of the cell
Lattice Constants (a, b and c)
and the angles between them Lattice Angles (alpha, beta and gamma).
The positions of the atoms inside the unit cell are described by the set of atomic positions (
xi, yi, zi) measured from a reference lattice point.
The symmetry properties of the crystal are described by the concept of space groups. All possible
symmetric arrangements of particles in three-dimensional space are described by the 230 space groups
(219 distinct types, or 230 if chiral copies are considered distinct.
Francium atoms have 87 electrons and
the electronic shell structure is [2, 8, 18, 32, 18, 8, 1] with Atomic Term Symbol (Quantum Numbers) 2S1/2.
Shell Structure of Francium - Electrons per energy
The ground state electronic configuration of Neutral Francium atom is
The portion of Francium configuration that is equivalent to the noble gas of
the preceding period, is abbreviated as [Rn]. For atoms with many electrons, this
notation can become lengthy and so an abbreviated notation is used.This is important as it is
the Valence electrons 7s1, electrons in
the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Francium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 7s1
Francium atomic radius is N/A, while it's covalent radius is N/A.
The electron affinity of Francium is N/A
Refer to table below for Ionization energies of Francium
Refer to below table for Francium Physical Properties
Francium is N/A of electricity. Refer to
below for the Electrical properties of Francium
Refer to table below for Thermal properties of Francium
Isotopes of rhodium. Naturally occurring Francium has
1 stable isotope -
List of unique identifiers to search the element in various chemical registry databases