Tellurium-136

Properties and data of the isotope ¹³⁶Te.

Content

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

Literature

General data

Name of the isotope:Tellurium-136; Te-136Symbol:¹³⁶Te or 13652TeMass number A:136 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:84Isotopic mass:135.9201012(24) u (atomic weight of Tellurium-136)Nuclide mass:135.8915768 u (calculated nuclear mass without electrons)Mass excess:-74.42525 MeVMass defect:1.214653408 u (per nucleus)Nuclear binding energy:1131.44236163 MeV (per nucleus)
8.31942913 MeV (average binding energy per nucleon)Separation energy:S_N = 4.7678(29) MeV (first neutron)
S_P = 12.024(3) MeV (first proton)Half-life:17.63(8) sDecay constant λ:0.039316346032895 s^-1Specific activity α:1.753841288208 × 10⁺²⁰ Bq g^-1
4740111589.7519 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Charge radius:4.7815(89) femtometer fmYear of discovery:1974

Radioactive Decay

Half-life T_½ = 17.63(8) s respectively 1.763 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹³⁶I	98.69 %	5.120(14) MeV
β^-, n	¹³⁵I	1.31 %	1.283(3) MeV

Parent Nuclides

Direct parent isotopes are: ¹³⁶Sb, ²⁴⁸Cm, ²⁵²Cf.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 84) and isobaric (same nucleon number A = 136) with Tellurium-136. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 84	Isobar A = 136
47	¹³¹Ag
48	¹³²Cd
49	¹³³In	¹³⁶In
50	¹³⁴Sn	¹³⁶Sn
51	¹³⁵Sb	¹³⁶Sb
52	¹³⁶Te	¹³⁶Te
53	¹³⁷I	¹³⁶I
54	¹³⁸Xe	¹³⁶Xe
55	¹³⁹Cs	¹³⁶Cs
56	¹⁴⁰Ba	¹³⁶Ba
57	¹⁴¹La	¹³⁶La
58	¹⁴²Ce	¹³⁶Ce
59	¹⁴³Pr	¹³⁶Pr
60	¹⁴⁴Nd	¹³⁶Nd
61	¹⁴⁵Pm	¹³⁶Pm
62	¹⁴⁶Sm	¹³⁶Sm
63	¹⁴⁷Eu	¹³⁶Eu
64	¹⁴⁸Gd	¹³⁶Gd
65	¹⁴⁹Tb	¹³⁶Tb
66	¹⁵⁰Dy
67	¹⁵¹Ho
68	¹⁵²Er
69	¹⁵³Tm
70	¹⁵⁴Yb
71	¹⁵⁵Lu
72	¹⁵⁶Hf
73	¹⁵⁷Ta
74	¹⁵⁸W
75	¹⁵⁹Re