Cerium-132

Properties and data of the isotope ¹³²Ce.

Content

General data

Name of the isotope:Cerium-132; Ce-132Symbol:¹³²Ce or 13258CeMass number A:132 (= number of nucleons)Atomic number Z:58 (= number of protons)Neutrons N:74Isotopic mass:131.911464(22) u (atomic weight of Cerium-132)Nuclide mass:131.8796486 u (calculated nuclear mass without electrons)Mass excess:-82.47075 MeVMass defect:1.18359164 u (per nucleus)Nuclear binding energy:1102.50851111 MeV (per nucleus)
8.35233721 MeV (average binding energy per nucleon)Separation energy:S_N = 10.83(40) MeV (first neutron)
S_P = 5.99(3) MeV (first proton)Half-life:3.51(11) hDecay constant λ:5.485495256093 × 10^-5 s^-1Specific activity α:2.521711841122 × 10⁺¹⁷ Bq g^-1
6815437.40844 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1960

Radioactive Decay

Half-life T_½ = 3.51(11) h (hours) respectively 1.2636 × 10⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹³²La	100 %	1.25(4) MeV

Parent Nuclides

Direct parent isotope is: ¹³²Pr.

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
^132mCe	2341.15(21) keV	9.4(3) ms	(8-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 74) and isobaric (same nucleon number A = 132) with Cerium-132. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 74	Isobar A = 132
41	¹¹⁵Nb
42	¹¹⁶Mo
43	¹¹⁷Tc
44	¹¹⁸Ru
45	¹¹⁹Rh
46	¹²⁰Pd
47	¹²¹Ag	¹³²Ag
48	¹²²Cd	¹³²Cd
49	¹²³In	¹³²In
50	¹²⁴Sn	¹³²Sn
51	¹²⁵Sb	¹³²Sb
52	¹²⁶Te	¹³²Te
53	¹²⁷I	¹³²I
54	¹²⁸Xe	¹³²Xe
55	¹²⁹Cs	¹³²Cs
56	¹³⁰Ba	¹³²Ba
57	¹³¹La	¹³²La
58	¹³²Ce	¹³²Ce
59	¹³³Pr	¹³²Pr
60	¹³⁴Nd	¹³²Nd
61	¹³⁵Pm	¹³²Pm
62	¹³⁶Sm	¹³²Sm
63	¹³⁷Eu	¹³²Eu
64	¹³⁸Gd
65	¹³⁹Tb
66	¹⁴⁰Dy
67	¹⁴¹Ho