Tin-133

Properties and data of the isotope ¹³³Sn.

Content

General data

Name of the isotope:Tin-133; Sn-133Symbol:¹³³Sn or 13350SnMass number A:133 (= number of nucleons)Atomic number Z:50 (= number of protons)Neutrons N:83Isotopic mass:132.9239138(20) u (atomic weight of Tin-133)Nuclide mass:132.8964864 u (calculated nuclear mass without electrons)Mass excess:-70.87384 MeVMass defect:1.186525828 u (per nucleus)Nuclear binding energy:1105.24168963 MeV (per nucleus)
8.31008789 MeV (average binding energy per nucleon)Separation energy:S_N = 2.3986(27) MeV (first neutron)
S_P = 15.75(6) MeV (first proton)Half-life:1.46(3) sDecay constant λ:0.47475834284928 s^-1Specific activity α:2.165955768991 × 10⁺²¹ Bq g^-1
58539345107.873 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Year of discovery:1973

Radioactive Decay

Half-life T_½ = 1.46(3) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹³³Sb	ca. 100 %	8.050(4) MeV
β^-, n	¹³²Sb	0.0294(24) %	0.690(3) MeV

Parent Nuclides

Direct parent isotopes are: ¹³³In, ¹³⁴In.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 83) and isobaric (same nucleon number A = 133) with Tin-133. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 83	Isobar A = 133
46	¹²⁹Pd
47	¹³⁰Ag
48	¹³¹Cd	¹³³Cd
49	¹³²In	¹³³In
50	¹³³Sn	¹³³Sn
51	¹³⁴Sb	¹³³Sb
52	¹³⁵Te	¹³³Te
53	¹³⁶I	¹³³I
54	¹³⁷Xe	¹³³Xe
55	¹³⁸Cs	¹³³Cs
56	¹³⁹Ba	¹³³Ba
57	¹⁴⁰La	¹³³La
58	¹⁴¹Ce	¹³³Ce
59	¹⁴²Pr	¹³³Pr
60	¹⁴³Nd	¹³³Nd
61	¹⁴⁴Pm	¹³³Pm
62	¹⁴⁵Sm	¹³³Sm
63	¹⁴⁶Eu	¹³³Eu
64	¹⁴⁷Gd
65	¹⁴⁸Tb
66	¹⁴⁹Dy
67	¹⁵⁰Ho
68	¹⁵¹Er
69	¹⁵²Tm
70	¹⁵³Yb
71	¹⁵⁴Lu
72	¹⁵⁵Hf
73	¹⁵⁶Ta
74	¹⁵⁷W