Indium
element 49 of periodic table is Indium with atomic number 49, atomic load 114.818. Indium, price In, has a centered Tetragonal structure and also Silver color. Indium is a post-transition steel element. Trivial name of Indium is triels, icosagens. Recognize everything around Indium Facts, physics Properties, chemistry Properties, digital configuration, Atomic and also Crystal Structure.

Indium is a chemical element with symbol In and also atomic number 49. It is a post-transition metallic element that is rarely in Earth"s crust. The steel is an extremely soft, malleable and easily fusible, through a melt point higher than sodium, yet lower 보다 lithium or tin.
You are watching: How many valence electrons are in indium
Indium Facts
Read key information and facts about element Indium
surname | Indium |
atomic Number | 49 |
atomic Symbol | In |
Atomic weight | 114.818 |
step | Solid |
shade | Silver |
Classification | post-transition metal |
group in periodic Table | 13 |
Group Name | boron family |
duration in regular Table | 5 |
Block in regular Table | p-block |
Electronic Configuration | |
Melting point | 156.6 °C |
Boiling suggest | 2072 °C |
Electronic shell Structure | <2, 8, 18, 18, 3> |
CAS Number | CAS7440-74-6 |
neighborhood
30
Zn
31
Ga
32
Ge
48
Cd
49
In
50
Sn
80
Hg
81
Tl
82
Pb
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
1 | 1 H 2 He | |||||||||||||||||
2 | 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne | |||||||||||||||||
3 | 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar | |||||||||||||||||
4 | 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr | |||||||||||||||||
5 | 37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe | |||||||||||||||||
6 | 55 Cs 56 Ba 72 Hf 73 Ta 74 W 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn | |||||||||||||||||
7 | 87 Fr 88 Ra 104 Rf 105 Db 106 Sg 107 Bh 108 Hs 109 Mt 110 Ds 111 Rg 112 Cn 113 Nh 114 Fl 115 Mc 116 Lv 117 Ts 118 Og | |||||||||||||||||
Lanthanides | 57 La 58 Ce 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 Tb 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu | |||||||||||||||||
Actinide | 89 Ac 90 Th 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md 102 No 103 Lr |
explore our interactive regular table
How to situate Indium on periodic Table
Periodic table is i ordered it by atom number, number of protons in the nucleus which is exact same as variety of electrons. The atomic number rises from left come right. Regular table starts at optimal left ( atomic number 1) and ends at bottom best (atomic number 118). Because of this you can straight look for atomic number 49 to discover Indium on routine table.
Another way to read periodic table and also locate an facet is through using team number (column) and period number (row). To situate Indium on periodic table look for cross section of team 13 and duration 5 in the modern-day periodic table.
explore Interactive regular Table come Understand and also Learn Cool fads
Table that Contents
History
Abundance
Physical Properties
Thermal Properties
Crystal Structure
Atomic & orbit Properties
Chemical Properties
Isotopes
Health and also Safety Parameters and Guidelines
Databases
Compare Indium with other elements
Indium History
The facet Indium was uncovered by Ferdinand Reich in year 1863 in Germany . Indium derived its surname from indigo
Indium Presence: abundance in Nature and also Around Us
The table below shows the variety of Indium in Universe, Sun, Meteorites, Earth"s Crust, Oceans and Human Body.
abundance in cosmos | 3×10-8% |
abundance in sunlight | 4×10-7% |
variety in Meteorites | 4.4×10-6% |
Abundance in Earth"s late | 1.6e-07 |
diversity in seas | 1×10-11% |
variety in human beings | N/A |
Crystal framework of Indium
The solid state framework of Indium is Centered Tetragonal.
The crystal structure can be explained in terms of its unit Cell. The unit cells repeats itself in three dimensional room to kind the structure.
Unit cabinet Parameters
The unit cell is represented in regards to its lattice parameters, which room the lengths the the cell edges Lattice Constants (a, b and c)
325.23 | 325.23 | 494.61 pm |
and the angles between them Lattice angle (alpha, beta and gamma).
π/2 | π/2 | π/2 |
The positions of the atoms inside the unit cabinet are explained by the collection of atom positions ( xi, yi, zi) measured indigenous a referral lattice point.
The symmetry properties of the decision are explained by the concept of an are groups. All feasible symmetric species of particles in three-dimensional room are described by the 230 room groups (219 distinct types, or 230 if chiral duplicates are thought about distinct.
an are Group name | I4/mmm | ![]() |
room Group Number | 139 | |
Crystal framework | Centered Tetragonal |
Indium Atomic and also Orbital Properties
Indium atoms have actually 49 electrons and the electronic shell framework is <2, 8, 18, 18, 3> through Atomic ax Symbol (Quantum Numbers) 2P1/2.
atom Number | 49 |
Number of electrons (with no charge) | 49 |
Number that Protons | 49 |
Mass Number | 115 |
Number that Neutrons | 66 |
Shell framework (Electrons per power level) | <2, 8, 18, 18, 3> |
Electron construction | |
Valence Electrons | 5s2 5p1 |
Oxidation State | -5;-2;-1 1;2;3 |
Atomic hatchet Symbol (Quantum Numbers) | 2P1/2 |
Shell framework of Indium - electron per power level

Ground State digital Configuration that Indium - neutral Indium atom
The ground state electronic configuration of Neutral Indium atom isSee more: How To Turn Off Hazard Lights On Toyota Camry, The Flashers, Yes
Unabbreviated electronic configuration the neutral Indium
Complete soil state electronic configuration because that the Indium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p1
Atomic framework of Indium
Indium atomic radius is 156 pm, while it"s covalent radius is 144 pm.
atom Radius | 156 pm (1.56 Å) |
Atomic Volume | 15.7069767442 cm3 |
Covalent Radius | 144 afternoon (1.44 Å) |
van der Waals Radius | 193 pm |
spirit Cross section | 194 σa/barns |
Atomic Spectrum that Indium

Indium chemical Properties: Indium Ionization Energies and electron affinity
The electron affinity that Indium is 28.9 kJ/mol
Valence | 3 |
Electronegativity | 1.78 |
ElectronAffinity | 28.9 kJ/mol |
Ionization energy of Indium
Refer come table below for Ionization energies of Indium
1 | 558.3 |
2 | 1820.7 |
3 | 2704 |
4 | 5210 |
Indium physical Properties
Refer to listed below table for Indium physical Properties
thickness | 7.31 g/cm3 |
Molar Volume | 15.7069767442 cm3 |
Elastic Properties
Young Modulus | 11 GPa |
Shear Modulus | N/A |
mass Modulus | N/A |
Poisson proportion | N/A |
Hardness that Indium - tests to measure of Hardness of Element
Mohs Hardness | 1.2 MPa |
Vickers Hardness | N/A |
Brinell Hardness | 8.83 MPa |
Indium electrical Properties
Indium is Conductor of electricity. Refer to table listed below for the electrical properties the Indium
electrical Conductivity | 1.2×107 S/m |
Resistivity | 8×10-8 m Ω |
Superconducting suggest | 3.41 |
Indium Heat and also Conduction Properties
thermal Conductivity | 82 W/(m K) |
Thermal development | 0.0000321 K-1 |
Indium Magnetic Properties
Magnetic kind | Diamagnetic |
Curie allude | N/A |
massive Magnetic Susceptibility | -1.4×10-9 |
Molar Magnetic Susceptibility | -1.61×10-10 |
Volume Magnetic Susceptibility | -1.02e-05 |
Optical nature of Indium
Refractive index | N/A |
Acoustic properties of Indium
speed of Sound | 1215 m/s |
Indium heat Properties - Enthalpies and also thermodynamics
Refer come table below for heat properties of Indium
Melting point | 429.75 K (156.6 °C) |
Boiling point | 2345 K (2072 °C) |
an important Temperature | N/A |
Superconducting point | 3.41 |
Enthalpies of Indium
heat of fusion | 3.26 kJ/mol |
warm of Vaporization | 230 kJ/mol |
warmth of burning | N/A |
Indium isotope - atom Properties that Indium
Isotopes of rhodium. Naturally emerging Indium has 1 steady isotope - 113In.
97In | ||||
98In | ||||
99In | ||||
100In | ||||
101In | ||||
102In | ||||
103In | ||||
104In | ||||
105In | ||||
106In | ||||
107In | ||||
108In | ||||
109In | ||||
110In | ||||
111In | ||||
112In | ||||
113In | 4.29% | stable | N/A | |
114In | ||||
115In | 95.71% | |||
116In | ||||
117In | ||||
118In | ||||
119In | ||||
120In | ||||
121In | ||||
122In | ||||
123In | ||||
124In | ||||
125In | ||||
126In | ||||
127In | ||||
128In | ||||
129In | ||||
130In | ||||
131In | ||||
132In | ||||
133In | ||||
134In | ||||
135In |
Regulatory and also Health - Health and also Safety Parameters and Guidelines
CAS Number | CAS7440-74-6 |
RTECS Number | RTECSNL1050000 |
period Hazard course | 4.1 |
dot Numbers | 3089 |
EU Number | N/A |
NFPA Fire Rating | N/A |
NFPA dangers | N/A |
NFPA health Rating | N/A |
NFPA Reactivity Rating | N/A |
Autoignition allude | N/A |
Flashpoint | N/A |
Database Search
perform of distinctive identifiers to find the facet in assorted chemical it is registered databases
CAS Number - chemical Abstracts organization (CAS) | CAS7440-74-6 |
CID Number | CID5359967 |
Gmelin Number | N/A |
NSC Number | N/A |
RTECS Number | RTECSNL1050000 |