Xenon-132

Properties and data of the isotope ¹³²Xe.

Contents

General data

Name of the isotope:Xenon-132; Xe-132Symbol:¹³²Xe or 13254XeMass number A:132 (= number of nucleons)Atomic number Z:54 (= number of protons)Neutrons N:78Isotopic mass:131.90415509(4) u (atomic weight of Xenon-132)Nuclide mass:131.8745337 u (calculated nuclear mass without electrons)Mass excess:-89.27896 MeVMass defect:1.194260086 u (per nucleus)Nuclear binding energy:1112.44610455 MeV (per nucleus)
8.427622 MeV (average binding energy per nucleon)Separation energy:S_N = 8.93672(1) MeV (first neutron)
S_P = 9.1252(6) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.7859(47) femtometer fmYear of discovery:1920

Parent Nuclides

Direct parent isotopes are: ¹³²Cs, ¹³²I.

Occurrence

Comparison of the natural Xenon isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Xenon Isotopic mixture	131.293 u	100 %
Isotope ¹²⁴Xe	123.90589(2) u	0.095(5) %	> 1.8 × 10²² a	0+
Isotope ¹²⁶Xe	125.90430(3) u	0.089(3) %	stable	0+
Isotope ¹²⁸Xe	127.903531(7) u	1.910(13) %	stable	0+
Isotope ¹²⁹Xe	128.90478086(4) u	26.401(138) %	stable	1/2+
Isotope ¹³⁰Xe	129.9035094(1) u	4.071(22) %	stable	0+
Isotope ¹³¹Xe	130.905084(2) u	21.232(51) %	stable	3/2+
Isotope ¹³²Xe	131.90415509(4) u	26.909(55) %	stable	0+
Isotope ¹³⁴Xe	133.905393033(10) u	10.436(35) %	5.8 × 10²² a	0+
Isotope ¹³⁶Xe	135.90721448(7) u	8.857(72) %	2.165(61) × 10²¹ a	0+

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
^132mXe	2752.21(17) keV	8.39(11) ms	(10+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 78) and isobaric (same nucleon number A = 132) with Xenon-132. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 78	Isobar A = 132
43	¹²¹Tc
44	¹²²Ru
45	¹²³Rh
46	¹²⁴Pd
47	¹²⁵Ag	¹³²Ag
48	¹²⁶Cd	¹³²Cd
49	¹²⁷In	¹³²In
50	¹²⁸Sn	¹³²Sn
51	¹²⁹Sb	¹³²Sb
52	¹³⁰Te	¹³²Te
53	¹³¹I	¹³²I
54	¹³²Xe	¹³²Xe
55	¹³³Cs	¹³²Cs
56	¹³⁴Ba	¹³²Ba
57	¹³⁵La	¹³²La
58	¹³⁶Ce	¹³²Ce
59	¹³⁷Pr	¹³²Pr
60	¹³⁸Nd	¹³²Nd
61	¹³⁹Pm	¹³²Pm
62	¹⁴⁰Sm	¹³²Sm
63	¹⁴¹Eu	¹³²Eu
64	¹⁴²Gd
65	¹⁴³Tb
66	¹⁴⁴Dy
67	¹⁴⁵Ho
68	¹⁴⁶Er
69	¹⁴⁷Tm
70	¹⁴⁸Yb
71	¹⁴⁹Lu