Cadmium-132

Properties and data of the isotope ¹³²Cd.

Content

General data

Name of the isotope:Cadmium-132; Cd-132Symbol:¹³²Cd or 13248CdMass number A:132 (= number of nucleons)Atomic number Z:48 (= number of protons)Neutrons N:84Isotopic mass:131.94604(21) u (atomic weight of Cadmium-132)Nuclide mass:131.9197096 u (calculated nuclear mass without electrons)Mass excess:-50.26342 MeVMass defect:1.15741448 u (per nucleus)Nuclear binding energy:1078.12464363 MeV (per nucleus)
8.16761094 MeV (average binding energy per nucleon)Separation energy:S_N = 3.12(22) MeV (first neutron)
S_P = 17.17(54) MeV (first proton)Half-life:84(5) msDecay constant λ:8.2517521495232 s^-1Specific activity α:3.793375098146 × 10⁺²² Bq g^-1
1025236513012.5 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2000

Radioactive Decay

Half-life T_½ = 84(5) ms respectively 8.4 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	¹³²In	< 40 %	12.15(20) MeV
β^-, n	¹³¹In	60(15) %	9.69(20) MeV
β^-, 2n	¹³⁰In	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 84) and isobaric (same nucleon number A = 132) with Cadmium-132. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 84	Isobar A = 132
47	¹³¹Ag	¹³²Ag
48	¹³²Cd	¹³²Cd
49	¹³³In	¹³²In
50	¹³⁴Sn	¹³²Sn
51	¹³⁵Sb	¹³²Sb
52	¹³⁶Te	¹³²Te
53	¹³⁷I	¹³²I
54	¹³⁸Xe	¹³²Xe
55	¹³⁹Cs	¹³²Cs
56	¹⁴⁰Ba	¹³²Ba
57	¹⁴¹La	¹³²La
58	¹⁴²Ce	¹³²Ce
59	¹⁴³Pr	¹³²Pr
60	¹⁴⁴Nd	¹³²Nd
61	¹⁴⁵Pm	¹³²Pm
62	¹⁴⁶Sm	¹³²Sm
63	¹⁴⁷Eu	¹³²Eu
64	¹⁴⁸Gd
65	¹⁴⁹Tb
66	¹⁵⁰Dy
67	¹⁵¹Ho
68	¹⁵²Er
69	¹⁵³Tm
70	¹⁵⁴Yb
71	¹⁵⁵Lu
72	¹⁵⁶Hf
73	¹⁵⁷Ta
74	¹⁵⁸W
75	¹⁵⁹Re