Indium (In)

Indium is the 49th element in the periodic table and has a symbol of In and atomic number of 49. It has an atomic weight of 114.818 and a mass number of 115. Indium has forty-nine protons and sixty-six neutrons in its nucleus, and forty-nine electrons in five shells. It is located in group thirteen, period five and block p of the periodic table. Soft silvery element belonging to group 13 of the periodic table. The most common natural isotope is In-115, which has a half-life of 6*10^4 years. Five other radioisotopes exist. Discovered in 1863 by Reich and Richter.

Atomic Number	49
Atomic Weight	114.818
Mass Number	115

Group	13
Period	5
Block	p

Protons	49 p⁺
Neutrons	66 n⁰
Electrons	49 e^-

Properties

Physical Properties
Atomic Radius	155 pm 246 pm
Molar Volume	15.7 cm³/mol
Covalent Radius	142 pm 136 pm 146 pm 142 pm
Metallic Radius	142 pm 158 pm
Ionic Radius	62 pm 80 pm 92 pm
Crystal Radius	76 pm 94 pm 106 pm
Van der Waals Radius	220 pm 193 pm 459 pm 193 pm 264 pm 446.3 pm
Density	7.31 g/cm³ 7,020 kg/m³
Energy
Proton Affinity
Electron Affinity	0.3 eV/particle
Ionization Energy	5.7863552 eV/particle 18.870407 eV/particle 28.04415 eV/particle 55.45 eV/particle 69.3 eV/particle 90 eV/particle 109 eV/particle 130.1 eV/particle 156 eV/particle 178 eV/particle 201 eV/particle 226 eV/particle 249 eV/particle 341 eV/particle 368 eV/particle 396 eV/particle 425 eV/particle 462 eV/particle 497.11 eV/particle 560 eV/particle 593.38 eV/particle 1,043 eV/particle 1,109 eV/particle 1,181 eV/particle 1,255 eV/particle 1,328 eV/particle 1,413 eV/particle 1,496 eV/particle 1,575 eV/particle 1,659 eV/particle 1,738 eV/particle 1,961 eV/particle 2,028.5 eV/particle 2,111 eV/particle 2,207 eV/particle 2,317 eV/particle 2,373 eV/particle 2,555 eV/particle 2,628.774 eV/particle 6,126 eV/particle 6,331 eV/particle 6,554 eV/particle 6,770 eV/particle 7,196 eV/particle 7,442 eV/particle 7,754 eV/particle 7,953.137 eV/particle 32,837.59 eV/particle 33,750.31 eV/particle

Heat of Vaporization	225.1 kJ/mol
Heat of Fusion	3.24 kJ/mol
Heat of Formation	243 kJ/mol
Electrons
Electron Shells	2, 8, 18, 18, 3

Valence Electrons	3

Electron Configuration	[Kr] 4d¹⁰ 5s² 5p¹

Oxidation States	-5, -2, -1, 0, 1, 2, 3
Electronegativity	9.793 eV/particle 0.16423 1.78
Electrophilicity	0.8439965667135223 eV/particle
Phases
Phase	Solid
Gas Phase
Boiling Point	2,300.15 K
Melting Point	429.7485 K
Critical Pressure
Critical Temperature
Triple Point	429.7436 K
Visual
Indium is a Silver. In has a CPK of #ff1493, Jmol of #a67573, and MOLCAS GV of #a67573. The Appearance of Element 49 is silvery lustrous gray.
Color	Silver #ff1493 #a67573 #a67573
Appearance	silvery lustrous gray
Refractive Index
Thermodynamic Properties
Thermal Conductivity	81.8 W/(m K)
Thermal Expansion	0.0000321 1/K
Molar Heat Capacity	26.74 J/(mol K)
Specific Heat Capacity	0.233 J/(g⋅K)
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
Type	Conductor
Electrical Conductivity	12 MS/m
Electrical Resistivity	0.00000008000000000001 m Ω
Superconducting Point	3.41 K
Magnetism
Type	diamagnetic
Magnetic Susceptibility (Mass)	-0.0000000014 m³/Kg
Magnetic Susceptibility (Molar)	-0.000000000161 m³/mol
Magnetic Susceptibility (Volume)	-0.0000102
Magnetic Ordering
Curie Point
Neel Point
Structure
The Crystal Structure of Indium is TET. The lattice constant of In is 4.59 Å. The lattice angles of Element 49 are π/2, π/2, π/2.
Crystal Structure	Centered Tetragonal (TET)
Lattice Constant	4.59 Å
Lattice Angles	π/2, π/2, π/2
Mechanical Properties
Indium has a Brinell of 8.83 MPa, and Mohs hardness of 1.2 MPa. The Young Modulus of In is 11 GPa. The Speed of Sound of Element 49 is 1215 m/s.
Hardness	8.83 MPa 1.2 MPa
Bulk Modulus
Shear Modulus
Young Modulus	11 GPa
Poisson Ratio
Speed of Sound	1,215 m/s
Classification
The CAS Group of Indium is IIIB. The IUPAC Group of In is IIIA. The Glawe Number of Element 49 is 80. The Mendeleev Number of Indium (In) is 84. The Pettifor Number of Indium is 79. The Goldschmidt Class of In is chalcophile.
Category	Post-transition metals, Poor metals
CAS Group	IIIB
IUPAC Group	IIIA
Glawe Number	80
Mendeleev Number	84
Pettifor Number	79
Geochemical Class
Goldschmidt Class	chalcophile
Other
The Dipole Polarizability of Indium is 65 plus or minus 4 a₀. In has a C6 Dispersion Coefficient (CD) of 779 a₀, and C6 Dispersion Coefficient (GB) of 643 a₀. The Allotropes of Element 49 is . The Neutron Cross Section of Indium (In) is 194. The Neutron Mass Absorption of Indium is 0.06. The Quantum Numbers of In is 2P1/2. The Space Group of Element 49 is 139 (I4/mmm).
Gas Basicity
Dipole Polarizability	65 ± 4 a₀
C6 Dispersion Coefficient	779 a₀ 643 a₀
Allotropes
Neutron Cross Section	194
Neutron Mass Absorption	0.06
Quantum Numbers	2P1/2
Space Group	139 (I4/mmm)

Isotopes of Indium

Stable Isotopes	2
Unstable Isotopes	40
Radioactive Isotopes	41

⁹⁶In

Abundance	Radioactive ☢️
Relative Atomic Mass	95.959109 ± 0.000537 Da
Mass Number	96
G-Factor
Half Life
Spin
Quadrupole Moment
Discovery Year	2016
Parity

⁹⁶In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	%
p (proton emission)	%

⁹⁷In

Abundance	Radioactive ☢️
Relative Atomic Mass	96.949125 ± 0.00043 Da
Mass Number	97
G-Factor
Half Life	36 ± 6 ms
Spin	9/2
Quadrupole Moment
Discovery Year	2011
Parity	+

⁹⁷In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	2.3%
p (proton emission)	%

⁹⁸In

Abundance	Radioactive ☢️
Relative Atomic Mass	97.942129 ± 0.000327 Da
Mass Number	98
G-Factor	0
Half Life	30 ± 1 ms
Spin	0
Quadrupole Moment	0
Discovery Year	1994
Parity	+

⁹⁸In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	0.13%

⁹⁹In

Abundance	Radioactive ☢️
Relative Atomic Mass	98.93411 ± 0.00032 Da
Mass Number	99
G-Factor
Half Life	3.11 ± 0.06 s
Spin	9/2
Quadrupole Moment
Discovery Year	1994
Parity	+

⁹⁹In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	0.29%

¹⁰⁰In

Abundance	Radioactive ☢️
Relative Atomic Mass	99.931101929 ± 0.0000024 Da
Mass Number	100
G-Factor
Half Life	5.62 ± 0.06 s
Spin	6
Quadrupole Moment
Discovery Year	1982
Parity	+

¹⁰⁰In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	1.66%

¹⁰¹In

Abundance	Radioactive ☢️
Relative Atomic Mass	100.926414025 ± 0.000012519 Da
Mass Number	101
G-Factor
Half Life	15.1 ± 1.1 s
Spin	9/2
Quadrupole Moment
Discovery Year	1988
Parity	+

¹⁰¹In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	1.7%

¹⁰²In

Abundance	Radioactive ☢️
Relative Atomic Mass	101.924105911 ± 0.000004909 Da
Mass Number	102
G-Factor
Half Life	23.3 ± 0.1 s
Spin	6
Quadrupole Moment
Discovery Year	1981
Parity	+

¹⁰²In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	0.0093%

¹⁰³In

Abundance	Radioactive ☢️
Relative Atomic Mass	102.91987883 ± 0.00000964 Da
Mass Number	103
G-Factor
Half Life	60 ± 1 s
Spin	9/2
Quadrupole Moment
Discovery Year	1978
Parity	+

¹⁰³In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁰⁴In

Abundance	Radioactive ☢️
Relative Atomic Mass	103.918214538 ± 0.0000062 Da
Mass Number	104
G-Factor	0.886 ± 0.004
Half Life	1.8 ± 0.03 m
Spin	5
Quadrupole Moment	0.63 ± 0.1
Discovery Year	1977
Parity	+

¹⁰⁴In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁰⁵In

Abundance	Radioactive ☢️
Relative Atomic Mass	104.914502322 ± 0.000011 Da
Mass Number	105
G-Factor	1.2593333333333 ± 0.0011111111111111
Half Life	5.07 ± 0.07 m
Spin	9/2
Quadrupole Moment	0.79 ± 0.05
Discovery Year	1975
Parity	+

¹⁰⁵In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁰⁶In

Abundance	Radioactive ☢️
Relative Atomic Mass	105.913463596 ± 0.000013125 Da
Mass Number	106
G-Factor	0.70114285714286 ± 0.001
Half Life	6.2 ± 0.1 m
Spin	7
Quadrupole Moment	0.92 ± 0.06
Discovery Year	1962
Parity	+

¹⁰⁶In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁰⁷In

Abundance	Radioactive ☢️
Relative Atomic Mass	106.910287497 ± 0.000010363 Da
Mass Number	107
G-Factor	1.2393333333333 ± 0.0017777777777778
Half Life	32.4 ± 0.3 m
Spin	9/2
Quadrupole Moment	0.77 ± 0.05
Discovery Year	1949
Parity	+

¹⁰⁷In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁰⁸In

Abundance	Radioactive ☢️
Relative Atomic Mass	107.909693654 ± 0.000009276 Da
Mass Number	108
G-Factor	0.65057142857143 ± 0.00042857142857143
Half Life	58 ± 1.2 m
Spin	7
Quadrupole Moment	0.957 ± 0.007
Discovery Year	1949
Parity	+

¹⁰⁸In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁰⁹In

Abundance	Radioactive ☢️
Relative Atomic Mass	108.907149679 ± 0.000004261 Da
Mass Number	109
G-Factor	1.2288888888889 ± 0.00088888888888889
Half Life	4.159 ± 0.01 h
Spin	9/2
Quadrupole Moment	0.8 ± 0.03
Discovery Year	1948
Parity	+

¹⁰⁹In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹¹⁰In

Abundance	Radioactive ☢️
Relative Atomic Mass	109.907170674 ± 0.000012402 Da
Mass Number	110
G-Factor	0.67228571428571 ± 0.0011428571428571
Half Life	4.92 ± 0.08 h
Spin	7
Quadrupole Moment	0.32 ± 0.02
Discovery Year	1939
Parity	+

¹¹⁰In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹¹¹In

Abundance	Radioactive ☢️
Relative Atomic Mass	110.905107236 ± 0.000003675 Da
Mass Number	111
G-Factor	1.2211111111111 ± 0.0015555555555556
Half Life	2.8048 ± 0.0001 d
Spin	9/2
Quadrupole Moment	0.76 ± 0.02
Discovery Year	1947
Parity	+

¹¹¹In Decay Modes

Decay Mode	Intensity
ϵ (electron capture)	100%

¹¹²In

Abundance	Radioactive ☢️
Relative Atomic Mass	111.905538718 ± 0.000004563 Da
Mass Number	112
G-Factor	2.82 ± 0.03
Half Life	14.88 ± 0.15 m
Spin	1
Quadrupole Moment	0.082 ± 0.005
Discovery Year	1947
Parity	+

¹¹²In Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	62%
β⁻ (β⁻ decay)	38%

¹¹³In

Abundance	4.281 ± 0.052
Relative Atomic Mass	112.904060451 ± 0.000000202 Da
Mass Number	113
G-Factor	1.2268444444444 ± 0.000088888888888889
Half Life
Spin	9/2
Quadrupole Moment
Discovery Year	1934
Parity	+

¹¹⁴In

Abundance	Radioactive ☢️
Relative Atomic Mass	113.904916405 ± 0.000000323 Da
Mass Number	114
G-Factor	2.813 ± 0.014
Half Life	71.9 ± 0.1 s
Spin	1
Quadrupole Moment
Discovery Year	1937
Parity	+

¹¹⁴In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	99.5%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0.5%

¹¹⁵In

Abundance	Radioactive ☢️ 95.719 ± 0.052
Relative Atomic Mass	114.903878772 ± 0.000000012 Da
Mass Number	115
G-Factor	1.2294666666667 ± 0.000088888888888889
Half Life	441 ± 25 Ty
Spin	9/2
Quadrupole Moment
Discovery Year	1924
Parity	+

¹¹⁵In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹¹⁶In

Abundance	Radioactive ☢️
Relative Atomic Mass	115.905259992 ± 0.000000236 Da
Mass Number	116
G-Factor	2.7826 ± 0.0008
Half Life	14.1 ± 0.03 s
Spin	1
Quadrupole Moment
Discovery Year	1937
Parity	+

¹¹⁶In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
ϵ (electron capture)	0.0237%

¹¹⁷In

Abundance	Radioactive ☢️
Relative Atomic Mass	116.904515729 ± 0.000005239 Da
Mass Number	117
G-Factor	1.2246666666667 ± 0.00088888888888889
Half Life	43.2 ± 0.3 m
Spin	9/2
Quadrupole Moment	0.79 ± 0.01
Discovery Year	1937
Parity	+

¹¹⁷In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹¹⁸In

Abundance	Radioactive ☢️
Relative Atomic Mass	117.906356705 ± 0.000008322 Da
Mass Number	118
G-Factor
Half Life	5 ± 0.5 s
Spin	1
Quadrupole Moment
Discovery Year	1949
Parity	+

¹¹⁸In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹¹⁹In

Abundance	Radioactive ☢️
Relative Atomic Mass	118.905851622 ± 0.000007847 Da
Mass Number	119
G-Factor	1.2237777777778 ± 0.0022222222222222
Half Life	2.4 ± 0.1 m
Spin	9/2
Quadrupole Moment	0.814 ± 0.007
Discovery Year	1949
Parity	+

¹¹⁹In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²⁰In

Abundance	Radioactive ☢️
Relative Atomic Mass	119.907967489 ± 0.000042953 Da
Mass Number	120
G-Factor
Half Life	3.08 ± 0.08 s
Spin	1
Quadrupole Moment
Discovery Year	1958
Parity	+

¹²⁰In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²¹In

Abundance	Radioactive ☢️
Relative Atomic Mass	120.907852778 ± 0.000029435 Da
Mass Number	121
G-Factor	1.2208888888889 ± 0.0011111111111111
Half Life	23.1 ± 0.6 s
Spin	9/2
Quadrupole Moment	0.776 ± 0.01
Discovery Year	1960
Parity	+

¹²¹In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²²In

Abundance	Radioactive ☢️
Relative Atomic Mass	121.910282458 ± 0.000053741 Da
Mass Number	122
G-Factor
Half Life	1.5 ± 0.3 s
Spin	1
Quadrupole Moment
Discovery Year	1963
Parity	+

¹²²In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²³In

Abundance	Radioactive ☢️
Relative Atomic Mass	122.910435252 ± 0.00002129 Da
Mass Number	123
G-Factor	1.2184444444444 ± 0.0015555555555556
Half Life	6.17 ± 0.05 s
Spin	9/2
Quadrupole Moment	0.722 ± 0.009
Discovery Year	1960
Parity	+

¹²³In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²⁴In

Abundance	Radioactive ☢️
Relative Atomic Mass	123.913184873 ± 0.000032808 Da
Mass Number	124
G-Factor	1.3456666666667 ± 0.0036666666666667
Half Life	3.12 ± 0.09 s
Spin	3
Quadrupole Moment	0.58 ± 0.07
Discovery Year	1964
Parity	+

¹²⁴In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²⁵In

Abundance	Radioactive ☢️
Relative Atomic Mass	124.913673841 ± 0.0000019 Da
Mass Number	125
G-Factor	1.2208888888889 ± 0.002
Half Life	2.36 ± 0.04 s
Spin	9/2
Quadrupole Moment	0.68 ± 0.03
Discovery Year	1967
Parity	+

¹²⁵In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²⁶In

Abundance	Radioactive ☢️
Relative Atomic Mass	125.916468202 ± 0.0000045 Da
Mass Number	126
G-Factor	1.3426666666667 ± 0.0036666666666667
Half Life	1.53 ± 0.01 s
Spin	3
Quadrupole Moment	0.47 ± 0.05
Discovery Year	1974
Parity	+

¹²⁶In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹²⁷In

Abundance	Radioactive ☢️
Relative Atomic Mass	126.91746604 ± 0.000010736 Da
Mass Number	127
G-Factor	1.2253333333333 ± 0.0017777777777778
Half Life	1.086 ± 0.007 s
Spin	9/2
Quadrupole Moment	0.56 ± 0.03
Discovery Year	1975
Parity	+

¹²⁷In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.03%

¹²⁸In

Abundance	Radioactive ☢️
Relative Atomic Mass	127.920353637 ± 0.000001419 Da
Mass Number	128
G-Factor
Half Life	816 ± 27 ms
Spin	3
Quadrupole Moment
Discovery Year	1975
Parity

¹²⁸In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.038%

¹²⁹In

Abundance	Radioactive ☢️
Relative Atomic Mass	128.921808534 ± 0.000002116 Da
Mass Number	129
G-Factor
Half Life	570 ± 10 ms
Spin	9/2
Quadrupole Moment
Discovery Year	1975
Parity	+

¹²⁹In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.23%

¹³⁰In

Abundance	Radioactive ☢️
Relative Atomic Mass	129.924952257 ± 0.000001921 Da
Mass Number	130
G-Factor
Half Life	273 ± 5 ms
Spin	1
Quadrupole Moment
Discovery Year	1973
Parity

¹³⁰In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.93%

¹³¹In

Abundance	Radioactive ☢️
Relative Atomic Mass	130.926972839 ± 0.000002367 Da
Mass Number	131
G-Factor
Half Life	261.5 ± 2.8 ms
Spin	9/2
Quadrupole Moment
Discovery Year	1976
Parity	+

¹³¹In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2.25%

¹³²In

Abundance	Radioactive ☢️
Relative Atomic Mass	131.932998444 ± 0.000064447 Da
Mass Number	132
G-Factor
Half Life	202.2 ± 0.2 ms
Spin	7
Quadrupole Moment
Discovery Year	1973
Parity	-

¹³²In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	12.3%
2n (2-neutron emission)	%

¹³³In

Abundance	Radioactive ☢️
Relative Atomic Mass	132.938067 ± 0.000215 Da
Mass Number	133
G-Factor
Half Life	163 ± 1.6 ms
Spin	9/2
Quadrupole Moment
Discovery Year	1996
Parity	+

¹³³In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	90%
2n (2-neutron emission)	%

¹³⁴In

Abundance	Radioactive ☢️
Relative Atomic Mass	133.944208 ± 0.000215 Da
Mass Number	134
G-Factor
Half Life	136 ± 4 ms
Spin	7
Quadrupole Moment
Discovery Year	1996
Parity	-

¹³⁴In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	65%
2n (2-neutron emission)	4%

¹³⁵In

Abundance	Radioactive ☢️
Relative Atomic Mass	134.949425 ± 0.000322 Da
Mass Number	135
G-Factor
Half Life	103 ± 3 ms
Spin	9/2
Quadrupole Moment
Discovery Year	2002
Parity	+

¹³⁵In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹³⁶In

Abundance	Radioactive ☢️
Relative Atomic Mass	135.956017 ± 0.000322 Da
Mass Number	136
G-Factor
Half Life	86 ± 9 ms
Spin	7
Quadrupole Moment
Discovery Year	2015
Parity	-

¹³⁶In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹³⁷In

Abundance	Radioactive ☢️
Relative Atomic Mass	136.961535 ± 0.000429 Da
Mass Number	137
G-Factor
Half Life	70 ± 40 ms
Spin	9/2
Quadrupole Moment
Discovery Year	2015
Parity	+

¹³⁷In Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

History

Ferdinand Reich and Hieronymous Theodor Richter first identified indium in sphalerite by its bright indigo-blue spectroscopic emission line. As no element was known with a bright blue emission they concluded that a new element was present in the minerals. Richter went on to isolate the metal in 1864. From the brilliant indigo line in its spectrum

Discoverers	Ferdinand Reich, T. Richter
Discovery Location	Germany
Discovery Year	1863
Etymology (Name Origin)	Latin: indicum (color indigo), the color it shows in a spectroscope.
Pronunciation	IN-di-em (English)

Indium is considered to be of low toxicity

When it is bent, indium emits a high-pitched 'cry'

Uses

Indium's current primary application is to form transparent electrodes from indium tin oxide in liquid crystal displays and touchscreens. It is widely used in thin-films to form lubricated layers. It is also used for making particularly low melting point alloys, and is a component in some lead-free solders. Used to coat high speed bearings and as an alloy that lowers the melting point of other metals. Relativly small amounts are used in dental items and in electronic semiconductors.

Sources

Found in certain zinc ores.

Abundance
Abundance in Earth's crust	0.25 mg/kg
Abundance in Oceans	0.02 mg/L
Abundance in Human Body
Abundance in Meteor	0.0000044 %
Abundance in Sun	0.0000004 %
Abundance in Universe	0.00000003 %

Nuclear Screening Constants

1	s	0.9903
2	p	4.102
2	s	12.8764
3	d	14.3218
3	p	17.4793
3	s	17.3692
4	d	32.0584
4	p	28.6312
4	s	27.2388
5	p	40.53
5	s	39.4885

Indium on ChemicalAid

AEDA subject keyword ID	17553
Art & Architecture Thesaurus ID	300386618
Australian Educational Vocabulary ID	scot/3531
Bibliothèque nationale de France ID	12276862f
CAB ID	187728
CAS Registry Number	7440-74-6
CPV Supplementary	AA30
ChEBI ID	30430
ChemSpider ID	4514408
Common Procurement Vocabulary	14763000
DSSTOX compound identifier	DTXCID401323007
DSSTox substance ID	DTXSID8052485
De Agostini ID	ìndio
Den Store Danske ID	indium
DrugBank ID	11659
ECHA Substance Infocard ID	100.028.345
Encyclopedia of China ID (Second Edition)	242975
Encyclopædia Britannica Online ID	science/indium
Encyclopædia Universalis ID	indium
Freebase ID	/m/025rw28
GND ID	4161516-5
Gran Enciclopèdia Catalana ID	0188543
Great Russian Encyclopedia Online ID	2008779
HSDB ID	6972
ICSC ID	1293
InChI	InChI=1S/In
InChIKey	APFVFJFRJDLVQX-UHFFFAOYSA-N
KBpedia ID	Indium
Krugosvet article	nauka_i_tehnika/himiya/INDI.html
Library of Congress authority ID	sh85065672
MeSH descriptor ID	D007204
NALT ID	47156
NDL Authority ID	00564200
NKCR AUT ID	ph118012
National Library of Israel J9U ID	987007545811305171
National Library of Latvia ID	000310559
OmegaWiki Defined Meaning	160221
OpenAlex ID	C543292547
PSH ID	5794
Probes And Drugs ID	PD159480
PubChem CID	5359967
Quora topic ID	Indium
RxNorm ID	1362699
Store norske leksikon ID	indium
Treccani ID	indio
UNII	045A6V3VFX
USGS Thesaurus ID	1479
Wolfram Language entity code	Entity["Mineral", "Indium"]
WordNet 3.1 Synset ID	14665401-n
YSO ID	38731
ZVG number	8370

Indium (In)

Properties

Isotopes of Indium

96In

96In Decay Modes

97In

97In Decay Modes

98In

98In Decay Modes

99In

99In Decay Modes

100In

100In Decay Modes

101In

101In Decay Modes

102In

102In Decay Modes

103In

103In Decay Modes

104In

104In Decay Modes

105In

105In Decay Modes

106In

106In Decay Modes

107In

107In Decay Modes

108In

108In Decay Modes

109In

109In Decay Modes

110In

110In Decay Modes

111In

111In Decay Modes

112In

112In Decay Modes

113In

114In

114In Decay Modes

115In

115In Decay Modes

116In

116In Decay Modes

117In

117In Decay Modes

118In

118In Decay Modes

119In

119In Decay Modes

120In

120In Decay Modes

121In

121In Decay Modes

122In

122In Decay Modes

123In

123In Decay Modes

124In

124In Decay Modes

125In

125In Decay Modes

126In

126In Decay Modes

127In

127In Decay Modes

128In

128In Decay Modes

129In

129In Decay Modes

130In

130In Decay Modes

131In

131In Decay Modes

132In

132In Decay Modes

133In

133In Decay Modes

134In

134In Decay Modes