Indium-112
Properties and data of the isotope 112In.
See also: list of Indium isotopes.
General data
Name of the isotope:Indium-112; In-112Symbol:112In or 11249InMass number A:112 (= number of nucleons)Atomic number Z:49 (= number of protons)Neutrons N:63Isotopic mass:111.905539(5) u (atomic weight of Indium-112)Nuclide mass:111.8786601 u (calculated nuclear mass without electrons)Mass excess:-87.98985 MeVMass defect:1.023777276 u (per nucleus)Nuclear binding energy:953.64238993 MeV (per nucleus)
8.5146642 MeV (average binding energy per nucleon)Separation energy:SN = 7.669(5) MeV (first neutron)
SP = 6.027(4) MeV (first proton)Half-life:14.88(15) minDecay constant λ:0.00077637453019707 s-1Specific activity α:4.212105208030 × 10+18 Bq g-1
113840681.29812 Ci g-1Spin and parity:
(nuclear angular momentum)1+Magnetic dipole moment:μ(μN) = + 2.82(3)Quadrupole moment Q:+ 0.087(5) barn (100 fm2)Nuclear g-factor:gl = 2.82Charge radius:4.5907(41) femtometer fmYear of discovery:1947
Radioactive Decay
Half-life T½ = 14.88(15) min (minutes) respectively 8.928 × 102 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EE/β+ | 112Cd | 62(4) % | 2.585(4) MeV | |
| β- | 112Sn | 38(4) % | 0.665(4) MeV | |
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
| Nuclear Isomer | Excitation Energy | Half-life | Spin |
|---|
| 112mIn | 156.592(25) keV | 20.67(8) min | 4+ |
| 112m2In | 350.80(5) keV | 0.69(5) μs | (7)+ |
| 112m3In | 613.82(6) keV | 2.81(3) μs | (8)- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 63) and isobaric (same nucleon number A = 112) with Indium-112. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| OZ | Isotone N = 63 | Isobar A = 112 |
|---|
| 35 | 98Br | |
| 36 | 99Kr | |
| 37 | 100Rb | |
| 38 | 101Sr | |
| 39 | 102Y | |
| 40 | 103Zr | 112Zr |
| 41 | 104Nb | 112Nb |
| 42 | 105Mo | 112Mo |
| 43 | 106Tc | 112Tc |
| 44 | 107Ru | 112Ru |
| 45 | 108Rh | 112Rh |
| 46 | 109Pd | 112Pd |
| 47 | 110Ag | 112Ag |
| 48 | 111Cd | 112Cd |
| 49 | 112In | 112In |
| 50 | 113Sn | 112Sn |
| 51 | 114Sb | 112Sb |
| 52 | 115Te | 112Te |
| 53 | 116I | 112I |
| 54 | 117Xe | 112Xe |
| 55 | 118Cs | 112Cs |
| 56 | 119Ba | |
| 57 | 120La | |
| 58 | 121Ce | |
| 59 | 122Pr | |
External data and identifiers
Last update: 2020-10-16
Perma link: https://www.chemlin.org/isotope/indium-112
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