Indium-106m

Properties and data of the isotope ¹⁰⁶In.

Content

General data

Name of the isotope:Indium-106m; In-106mSymbol:¹⁰⁶In or 10649InMass number A:106 (= number of nucleons)Atomic number Z:49 (= number of protons)Neutrons N:57Isotopic mass:105.913464(13) u (atomic weight of Indium-106m)
Excitation energy: 28.6(3) keVNuclide mass:105.8865851 u (calculated nuclear mass without electrons)Mass excess:-80.60776 MeVMass defect:0.96386278 u (per nucleus)Nuclear binding energy:897.83239639 MeV (per nucleus)
8.47011695 MeV (average binding energy per nucleon)Half-life:5.2(1) minDecay constant λ:0.0022216255787178 s^-1Specific activity α:1.274184968864 × 10⁺¹⁹ Bq g^-1
344374315.90932 Ci g^-1Spin and parity:
(nuclear angular momentum)(2)+

Radioactive Decay

Half-life T_½ = 5.2(1) min (minutes) respectively 3.12 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁰⁶Cd	100 %

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
¹⁰⁶In		6.2(1) min	7+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 57) and isobaric (same nucleon number A = 106) with Indium-106m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 57	Isobar A = 106
32	⁸⁹Ge
33	⁹⁰As
34	⁹¹Se
35	⁹²Br
36	⁹³Kr
37	⁹⁴Rb
38	⁹⁵Sr	¹⁰⁶Sr
39	⁹⁶Y	¹⁰⁶Y
40	⁹⁷Zr	¹⁰⁶Zr
41	⁹⁸Nb	¹⁰⁶Nb
42	⁹⁹Mo	¹⁰⁶Mo
43	¹⁰⁰Tc	¹⁰⁶Tc
44	¹⁰¹Ru	¹⁰⁶Ru
45	¹⁰²Rh	¹⁰⁶Rh
46	¹⁰³Pd	¹⁰⁶Pd
47	¹⁰⁴Ag	¹⁰⁶Ag
48	¹⁰⁵Cd	¹⁰⁶Cd
49	¹⁰⁶In	¹⁰⁶In
50	¹⁰⁷Sn	¹⁰⁶Sn
51	¹⁰⁸Sb	¹⁰⁶Sb
52	¹⁰⁹Te	¹⁰⁶Te
53	¹¹⁰I
54	¹¹¹Xe
55	¹¹²Cs