Indium-135

Properties and data of the isotope ¹³⁵In.

Content

General data

Name of the isotope:Indium-135; In-135Symbol:¹³⁵In or 13549InMass number A:135 (= number of nucleons)Atomic number Z:49 (= number of protons)Neutrons N:86Isotopic mass:134.95005(43) u (atomic weight of Indium-135)Nuclide mass:134.9231711 u (calculated nuclear mass without electrons)Mass excess:-46.52813 MeVMass defect:1.178559344 u (per nucleus)Nuclear binding energy:1097.82095758 MeV (per nucleus)
8.13200709 MeV (average binding energy per nucleon)Separation energy:S_N = 2.94(50) MeV (first neutron)
S_P = 14.90(57) MeV (first proton)Half-life:101(5) msDecay constant λ:6.8628433718806 s^-1Specific activity α:3.084254439190 × 10⁺²² Bq g^-1
833582280862.22 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:2002

Radioactive Decay

Half-life T_½ = 101(5) ms respectively 1.01 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	¹³⁵Sn	< 100 %	14.1(4) MeV
β^-, n	¹³⁴Sn	> 0 %	11.83(40) MeV
β^-, 2n	¹³³Sn	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 86) and isobaric (same nucleon number A = 135) with Indium-135. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 86	Isobar A = 135
48	¹³⁴Cd
49	¹³⁵In	¹³⁵In
50	¹³⁶Sn	¹³⁵Sn
51	¹³⁷Sb	¹³⁵Sb
52	¹³⁸Te	¹³⁵Te
53	¹³⁹I	¹³⁵I
54	¹⁴⁰Xe	¹³⁵Xe
55	¹⁴¹Cs	¹³⁵Cs
56	¹⁴²Ba	¹³⁵Ba
57	¹⁴³La	¹³⁵La
58	¹⁴⁴Ce	¹³⁵Ce
59	¹⁴⁵Pr	¹³⁵Pr
60	¹⁴⁶Nd	¹³⁵Nd
61	¹⁴⁷Pm	¹³⁵Pm
62	¹⁴⁸Sm	¹³⁵Sm
63	¹⁴⁹Eu	¹³⁵Eu
64	¹⁵⁰Gd	¹³⁵Gd
65	¹⁵¹Tb	¹³⁵Tb
66	¹⁵²Dy
67	¹⁵³Ho
68	¹⁵⁴Er
69	¹⁵⁵Tm
70	¹⁵⁶Yb
71	¹⁵⁷Lu
72	¹⁵⁸Hf
73	¹⁵⁹Ta
74	¹⁶⁰W
75	¹⁶¹Re
76	¹⁶²Os