Element 49 of Periodic table is
Indium with atomic number 49,
atomic weight 114.818.
Indium, symbol In, has a
Centered Tetragonal structure and Silver color.
Indium is a post-transition metal element.
Trivial name of Indium is triels, icosagens.
Know everything about Indium Facts, Physical Properties, Chemical
Properties, Electronic configuration, Atomic and Crystal Structure.
Indium is a chemical element with symbol In and atomic number 49. It is a post-transition metallic element that is rare in Earth's crust. The metal is very soft, malleable and easily fusible, with a melting point higher than sodium, but lower than lithium or tin.
Read key information and facts about element Indium
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
49 to find Indium 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 Indium on periodic
table look for cross section of group 13 and period
5 in the modern periodic table.
Interactive Periodic Table to Understand
and Learn Cool Trends
The element Indium was discovered by Ferdinand Reich in year
1863 in Germany
derived its name from indigo
The table below shows the abundance of Indium in Universe, Sun, Meteorites,
Earth's Crust, Oceans and Human Body.
The solid state structure of Indium is Centered Tetragonal.
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.
Indium atoms have 49 electrons and
the electronic shell structure is [2, 8, 18, 18, 3] with Atomic Term Symbol (Quantum Numbers) 2P1/2.
Shell Structure of Indium - Electrons per energy
The ground state electronic configuration of Neutral Indium atom is
[Kr] 4d10 5s2 5p1.
The portion of Indium configuration that is equivalent to the noble gas of
the preceding period, is abbreviated as [Kr]. 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 4d10 5s2 5p1, electrons in
the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Indium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p1
Indium atomic radius is 156 pm, while it's covalent radius is 144 pm.
The electron affinity of Indium is 28.9 kJ/mol
Refer to table below for Ionization energies of Indium
Refer to below table for Indium Physical Properties
Indium is Conductor of electricity. Refer to
below for the Electrical properties of Indium
Refer to table below for Thermal properties of Indium
Isotopes of rhodium. Naturally occurring Indium has
1 stable isotope -
List of unique identifiers to search the element in various chemical registry databases