Antimony-133

Properties and data of the isotope ¹³³Sb.

Content

General data

Name of the isotope:Antimony-133; Sb-133Symbol:¹³³Sb or 13351SbMass number A:133 (= number of nucleons)Atomic number Z:51 (= number of protons)Neutrons N:82Isotopic mass:132.915272(3) u (atomic weight of Antimony-133)Nuclide mass:132.8872961 u (calculated nuclear mass without electrons)Mass excess:-78.92362 MeVMass defect:1.194327744 u (per nucleus)Nuclear binding energy:1112.50912757 MeV (per nucleus)
8.36473028 MeV (average binding energy per nucleon)Separation energy:S_N = 7.360(4) MeV (first neutron)
S_P = 9.666(4) MeV (first proton)Half-life:2.34(5) minDecay constant λ:0.0049369457304839 s^-1Specific activity α:2.252347167184 × 10⁺¹⁹ Bq g^-1
608742477.61749 Ci g^-1Spin and parity:
(nuclear angular momentum)(7/2+)Magnetic dipole moment:μ(μ_N) = 3.00(4)Nuclear g-factor:g_l = 0.85714285714286Year of discovery:1966

Radioactive Decay

Half-life T_½ = 2.34(5) min (minutes) respectively 1.404 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹³³Te	100 %	4.014(4) MeV

Parent Nuclides

Direct parent isotope is: ¹³³Sn.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 82) and isobaric (same nucleon number A = 133) with Antimony-133. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 82	Isobar A = 133
45	¹²⁷Rh
46	¹²⁸Pd
47	¹²⁹Ag
48	¹³⁰Cd	¹³³Cd
49	¹³¹In	¹³³In
50	¹³²Sn	¹³³Sn
51	¹³³Sb	¹³³Sb
52	¹³⁴Te	¹³³Te
53	¹³⁵I	¹³³I
54	¹³⁶Xe	¹³³Xe
55	¹³⁷Cs	¹³³Cs
56	¹³⁸Ba	¹³³Ba
57	¹³⁹La	¹³³La
58	¹⁴⁰Ce	¹³³Ce
59	¹⁴¹Pr	¹³³Pr
60	¹⁴²Nd	¹³³Nd
61	¹⁴³Pm	¹³³Pm
62	¹⁴⁴Sm	¹³³Sm
63	¹⁴⁵Eu	¹³³Eu
64	¹⁴⁶Gd
65	¹⁴⁷Tb
66	¹⁴⁸Dy
67	¹⁴⁹Ho
68	¹⁵⁰Er
69	¹⁵¹Tm
70	¹⁵²Yb
71	¹⁵³Lu
72	¹⁵⁴Hf
73	¹⁵⁵Ta