Iodine-134

Properties and data of the isotope ¹³⁴I.

Content

General data

Name of the isotope:Iodine-134; I-134Other names:Jod-134Symbol:¹³⁴I or 13453IMass number A:134 (= number of nucleons)Atomic number Z:53 (= number of protons)Neutrons N:81Isotopic mass:133.909776(5) u (atomic weight of Iodine-134)Nuclide mass:133.8807031 u (calculated nuclear mass without electrons)Mass excess:-84.04311 MeVMass defect:1.206808892 u (per nucleus)Nuclear binding energy:1124.13524204 MeV (per nucleus)
8.38906897 MeV (average binding energy per nucleon)Separation energy:S_N = 6.256(8) MeV (first neutron)
S_P = 8.395(5) MeV (first proton)Half-life:52.5(2) minDecay constant λ:0.00022004672398728 s^-1Specific activity α:9.963551636233 × 10⁺¹⁷ Bq g^-1
26928517.935766 Ci g^-1Spin and parity:
(nuclear angular momentum)(4)+Year of discovery:1948

Radioactive Decay

Half-life T_½ = 52.5(2) min (minutes) respectively 3.150 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹³⁴Xe	100 %	4.082(5) MeV

Parent Nuclides

Direct parent isotope is: ¹³⁴Te.

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
^134mI	316.49(22) keV	3.52(4) min	(8)-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 81) and isobaric (same nucleon number A = 134) with Iodine-134. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 81	Isobar A = 134
45	¹²⁶Rh
46	¹²⁷Pd
47	¹²⁸Ag
48	¹²⁹Cd	¹³⁴Cd
49	¹³⁰In	¹³⁴In
50	¹³¹Sn	¹³⁴Sn
51	¹³²Sb	¹³⁴Sb
52	¹³³Te	¹³⁴Te
53	¹³⁴I	¹³⁴I
54	¹³⁵Xe	¹³⁴Xe
55	¹³⁶Cs	¹³⁴Cs
56	¹³⁷Ba	¹³⁴Ba
57	¹³⁸La	¹³⁴La
58	¹³⁹Ce	¹³⁴Ce
59	¹⁴⁰Pr	¹³⁴Pr
60	¹⁴¹Nd	¹³⁴Nd
61	¹⁴²Pm	¹³⁴Pm
62	¹⁴³Sm	¹³⁴Sm
63	¹⁴⁴Eu	¹³⁴Eu
64	¹⁴⁵Gd	¹³⁴Gd
65	¹⁴⁶Tb
66	¹⁴⁷Dy
67	¹⁴⁸Ho
68	¹⁴⁹Er
69	¹⁵⁰Tm
70	¹⁵¹Yb
71	¹⁵²Lu
72	¹⁵³Hf