Tellurium-140

Properties and data of the isotope ¹⁴⁰Te.

Content

General data

Name of the isotope:Tellurium-140; Te-140Symbol:¹⁴⁰Te or 14052TeMass number A:140 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:88Isotopic mass:139.93926(7) u (atomic weight of Tellurium-140)Nuclide mass:139.9107356 u (calculated nuclear mass without electrons)Mass excess:-56.57895 MeVMass defect:1.230154272 u (per nucleus)Nuclear binding energy:1145.88132344 MeV (per nucleus)
8.1848666 MeV (average binding energy per nucleon)Separation energy:S_N = 4.44(6) MeV (first neutron)
S_P = 14.08(40) MeV (first proton)Half-life:Spin and parity:
(nuclear angular momentum)0+Year of discovery:1994

Radioactive Decay

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁴⁰I	100 %	7.03(6) MeV
β^-, n	¹³⁹I	?	3.82(6) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 88) and isobaric (same nucleon number A = 140) with Tellurium-140. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 88	Isobar A = 140
49	¹³⁷In
50	¹³⁸Sn
51	¹³⁹Sb	¹⁴⁰Sb
52	¹⁴⁰Te	¹⁴⁰Te
53	¹⁴¹I	¹⁴⁰I
54	¹⁴²Xe	¹⁴⁰Xe
55	¹⁴³Cs	¹⁴⁰Cs
56	¹⁴⁴Ba	¹⁴⁰Ba
57	¹⁴⁵La	¹⁴⁰La
58	¹⁴⁶Ce	¹⁴⁰Ce
59	¹⁴⁷Pr	¹⁴⁰Pr
60	¹⁴⁸Nd	¹⁴⁰Nd
61	¹⁴⁹Pm	¹⁴⁰Pm
62	¹⁵⁰Sm	¹⁴⁰Sm
63	¹⁵¹Eu	¹⁴⁰Eu
64	¹⁵²Gd	¹⁴⁰Gd
65	¹⁵³Tb	¹⁴⁰Tb
66	¹⁵⁴Dy	¹⁴⁰Dy
67	¹⁵⁵Ho	¹⁴⁰Ho
68	¹⁵⁶Er
69	¹⁵⁷Tm
70	¹⁵⁸Yb
71	¹⁵⁹Lu
72	¹⁶⁰Hf
73	¹⁶¹Ta
74	¹⁶²W
75	¹⁶³Re
76	¹⁶⁴Os
77	¹⁶⁵Ir
78	¹⁶⁶Pt