Xenon-113

Properties and data of the isotope ¹¹³Xe.

Content

General data

Name of the isotope:Xenon-113; Xe-113Symbol:¹¹³Xe or 11354XeMass number A:113 (= number of nucleons)Atomic number Z:54 (= number of protons)Neutrons N:59Isotopic mass:112.933222(7) u (atomic weight of Xenon-113)Nuclide mass:112.9036006 u (calculated nuclear mass without electrons)Mass excess:-62.20331 MeVMass defect:1.000559772 u (per nucleus)Nuclear binding energy:932.01542426 MeV (per nucleus)
8.24792411 MeV (average binding energy per nucleon)Separation energy:S_N = 10.249(11) MeV (first neutron)
S_P = 2.429(12) MeV (first proton)Half-life:2.74(8) sDecay constant λ:0.25297342356202 s^-1Specific activity α:1.360215705813 × 10⁺²¹ Bq g^-1
36762586643.603 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2+)Year of discovery:1973

Radioactive Decay

Half-life T_½ = 2.74(8) s.

Decay mode	Daughter	Probability	Decay energy
EE/β⁺	¹¹³I	92.98 %	8.916(11) MeV
ε, p	¹¹²Te	7(4) %
α	¹⁰⁹Te	0.011 %	3,087(8) MeV
β⁺, α	¹⁰⁹Sb	0.007(4) %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 59) and isobaric (same nucleon number A = 113) with Xenon-113. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 59	Isobar A = 113
33	⁹²As
34	⁹³Se
35	⁹⁴Br
36	⁹⁵Kr
37	⁹⁶Rb
38	⁹⁷Sr
39	⁹⁸Y
40	⁹⁹Zr
41	¹⁰⁰Nb	¹¹³Nb
42	¹⁰¹Mo	¹¹³Mo
43	¹⁰²Tc	¹¹³Tc
44	¹⁰³Ru	¹¹³Ru
45	¹⁰⁴Rh	¹¹³Rh
46	¹⁰⁵Pd	¹¹³Pd
47	¹⁰⁶Ag	¹¹³Ag
48	¹⁰⁷Cd	¹¹³Cd
49	¹⁰⁸In	¹¹³In
50	¹⁰⁹Sn	¹¹³Sn
51	¹¹⁰Sb	¹¹³Sb
52	¹¹¹Te	¹¹³Te
53	¹¹²I	¹¹³I
54	¹¹³Xe	¹¹³Xe
55	¹¹⁴Cs	¹¹³Cs
56	¹¹⁵Ba
57	¹¹⁶La