Element 88 of Periodic table is
Radium with atomic number 88,
atomic weight 226.
Radium, symbol Ra, has a
Body Centered Cubic structure and Silver color.
Radium is a alkaline earth metal element.
Trivial name of Radium is alkaline earth metals*.
Know everything about Radium Facts, Physical Properties, Chemical
Properties, Electronic configuration, Atomic and Crystal Structure.
Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is almost colorless, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2).
Read key information and facts about element Radium
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
88 to find Radium 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 Radium on periodic
table look for cross section of group 2 and period
7 in the modern periodic table.
Interactive Periodic Table to Understand
and Learn Cool Trends
The element Radium was discovered by Pierre Curie in year
1898 in France
derived its name from the Latin radius, 'ray'
The table below shows the abundance of Radium in Universe, Sun, Meteorites,
Earth's Crust, Oceans and Human Body.
The solid state structure of Radium 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.
Radium atoms have 88 electrons and
the electronic shell structure is [2, 8, 18, 32, 18, 8, 2] with Atomic Term Symbol (Quantum Numbers) 1S0.
Shell Structure of Radium - Electrons per energy
The ground state electronic configuration of Neutral Radium atom is
The portion of Radium 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 7s2, electrons in
the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Radium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 7s2
Radium atomic radius is N/A, while it's covalent radius is N/A.
The electron affinity of Radium is N/A
Refer to table below for Ionization energies of Radium
Refer to below table for Radium Physical Properties
Radium is Conductor of electricity. Refer to
below for the Electrical properties of Radium
Refer to table below for Thermal properties of Radium
Isotopes of rhodium. Naturally occurring Radium has
1 stable isotope -
List of unique identifiers to search the element in various chemical registry databases
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