Iodine-144

Properties and data of the isotope ¹⁴⁴I.

Content

General data

Name of the isotope:Iodine-144; I-144Other names:Jod-144Symbol:¹⁴⁴I or 14453IMass number A:144 (= number of nucleons)Atomic number Z:53 (= number of protons)Neutrons N:91Isotopic mass:143.95134(43) u (atomic weight of Iodine-144)Nuclide mass:143.9222671 u (calculated nuclear mass without electrons)Mass excess:-45.3265 MeVMass defect:1.251894052 u (per nucleus)Nuclear binding energy:1166.13179807 MeV (per nucleus)
8.09813749 MeV (average binding energy per nucleon)Separation energy:S_N = 2.612(447) MeV (first neutron)
S_P = 12.089(640) MeV (first proton)Half-life:300 nsDecay constant λ:2310490.6018665 s^-1Specific activity α:9.730139762237 × 10⁺²⁷ Bq g^-1
2.629767503307 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:1994

Radioactive Decay

Half-life T_½ = 300 ns respectively 3.0 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁴⁴Xe	?	11.59(40) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 91) and isobaric (same nucleon number A = 144) with Iodine-144. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 91	Isobar A = 144
52	¹⁴³Te
53	¹⁴⁴I	¹⁴⁴I
54	¹⁴⁵Xe	¹⁴⁴Xe
55	¹⁴⁶Cs	¹⁴⁴Cs
56	¹⁴⁷Ba	¹⁴⁴Ba
57	¹⁴⁸La	¹⁴⁴La
58	¹⁴⁹Ce	¹⁴⁴Ce
59	¹⁵⁰Pr	¹⁴⁴Pr
60	¹⁵¹Nd	¹⁴⁴Nd
61	¹⁵²Pm	¹⁴⁴Pm
62	¹⁵³Sm	¹⁴⁴Sm
63	¹⁵⁴Eu	¹⁴⁴Eu
64	¹⁵⁵Gd	¹⁴⁴Gd
65	¹⁵⁶Tb	¹⁴⁴Tb
66	¹⁵⁷Dy	¹⁴⁴Dy
67	¹⁵⁸Ho	¹⁴⁴Ho
68	¹⁵⁹Er	¹⁴⁴Er
69	¹⁶⁰Tm	¹⁴⁴Tm
70	¹⁶¹Yb
71	¹⁶²Lu
72	¹⁶³Hf
73	¹⁶⁴Ta
74	¹⁶⁵W
75	¹⁶⁶Re
76	¹⁶⁷Os
77	¹⁶⁸Ir
78	¹⁶⁹Pt
79	¹⁷⁰Au
80	¹⁷¹Hg