Palladium-103

Properties and data of the isotope ¹⁰³Pd.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: List of individual Palladium isotopes (and general data sources).

General data

Name of the isotope:Palladium-103; Pd-103Symbol:¹⁰³Pd or 10346PdMass number A:103 (= number of nucleons)Atomic number Z:46 (= number of protons)Neutrons N:57Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.2391304347826 (= neutron-proton ratio)Neutron excess (N-Z):11Isotopic mass:102.9061108(10) u (atomic weight of Palladium-103)Nuclide mass:102.8808774 u (calculated nuclear mass without electrons)Mass excess:-87.45723 MeVMass defect:0.94774088400001 u (per nucleus)Nuclear binding energy:882.814947 MeV (per nucleus)
8.5710189 MeV (average binding energy per nucleon)Separation energy:S_N = 7.6253(6) MeV (first neutron)
S_P = 8.571019(9) MeV (first proton)Half-life:16.991(19) dDecay constant λ:4.721638992429 × 10^-7 s^-1Specific activity α:2.787683833546 × 10⁺¹⁵ Bq g^-1
75342.806312078 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2+Year of discovery:1950

Radioactive Decay

Half-life T_½ = 16.991(19) d respectively 1.4680224 × 10⁶ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC	¹⁰³Rh	100 %	0.5745(25) MeV

Parent Nuclides

Direct parent isotope is: ¹⁰³Ag.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 57) and isobaric (same nucleon number A = 103) with Palladium-103. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 57	Isobar A = 103
32	⁸⁹Ge
33	⁹⁰As
34	⁹¹Se
35	⁹²Br
36	⁹³Kr
37	⁹⁴Rb	¹⁰³Rb
38	⁹⁵Sr	¹⁰³Sr
39	⁹⁶Y	¹⁰³Y
40	⁹⁷Zr	¹⁰³Zr
41	⁹⁸Nb	¹⁰³Nb
42	⁹⁹Mo	¹⁰³Mo
43	¹⁰⁰Tc	¹⁰³Tc
44	¹⁰¹Ru	¹⁰³Ru
45	¹⁰²Rh	¹⁰³Rh
46	¹⁰³Pd	¹⁰³Pd
47	¹⁰⁴Ag	¹⁰³Ag
48	¹⁰⁵Cd	¹⁰³Cd
49	¹⁰⁶In	¹⁰³In
50	¹⁰⁷Sn	¹⁰³Sn
51	¹⁰⁸Sb	¹⁰³Sb
52	¹⁰⁹Te
53	¹¹⁰I
54	¹¹¹Xe
55	¹¹²Cs