Tellurium-108

Properties and data of the isotope ¹⁰⁸Te.

Content

General data

Name of the isotope:Tellurium-108; Te-108Symbol:¹⁰⁸Te or 10852TeMass number A:108 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:56Isotopic mass:107.92938(6) u (atomic weight of Tellurium-108)Nuclide mass:107.9008556 u (calculated nuclear mass without electrons)Mass excess:-65.78211 MeVMass defect:0.96275696000001 u (per nucleus)Nuclear binding energy:896.8023317 MeV (per nucleus)
8.30372529 MeV (average binding energy per nucleon)Separation energy:S_N = 13.31(7) MeV (first neutron)
S_P = 2.417(7) MeV (first proton)Half-life:2.1(1) sDecay constant λ:0.33007008598093 s^-1Specific activity α:1.8576902349 × 10⁺²¹ Bq g^-1
50207844188.649 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1974

Radioactive Decay

Half-life T_½ = 2.1(1) s.

Decay mode	Daughter	Probability	Decay energy
α	¹⁰⁴Sn	49(9) %	3.420(8) MeV
EE/β⁺	¹⁰⁸Sb	51(4) %	6.664(8)
β⁺, p	¹⁰⁷Sb	2.4(10) %

Parent Nuclides

Direct parent isotope is: ¹¹²Xe.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 56) and isobaric (same nucleon number A = 108) with Tellurium-108. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 56	Isobar A = 108
31	⁸⁷Ga
32	⁸⁸Ge
33	⁸⁹As
34	⁹⁰Se
35	⁹¹Br
36	⁹²Kr
37	⁹³Rb
38	⁹⁴Sr
39	⁹⁵Y	¹⁰⁸Y
40	⁹⁶Zr	¹⁰⁸Zr
41	⁹⁷Nb	¹⁰⁸Nb
42	⁹⁸Mo	¹⁰⁸Mo
43	⁹⁹Tc	¹⁰⁸Tc
44	¹⁰⁰Ru	¹⁰⁸Ru
45	¹⁰¹Rh	¹⁰⁸Rh
46	¹⁰²Pd	¹⁰⁸Pd
47	¹⁰³Ag	¹⁰⁸Ag
48	¹⁰⁴Cd	¹⁰⁸Cd
49	¹⁰⁵In	¹⁰⁸In
50	¹⁰⁶Sn	¹⁰⁸Sn
51	¹⁰⁷Sb	¹⁰⁸Sb
52	¹⁰⁸Te	¹⁰⁸Te
53	¹⁰⁹I	¹⁰⁸I
54	¹¹⁰Xe