Palladium-104

Properties and data of the isotope ¹⁰⁴Pd.

Contents

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

General data

Name of the isotope:Palladium-104; Pd-104Symbol:¹⁰⁴Pd or 10446PdMass number A:104 (= number of nucleons)Atomic number Z:46 (= number of protons)Neutrons N:58Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.2608695652174 (= neutron-proton ratio)Neutron excess (N-Z):12Isotopic mass:103.904031(9) u (atomic weight of Palladium-104)Nuclide mass:103.8787976 u (calculated nuclear mass without electrons)Mass excess:-89.39455 MeVMass defect:0.9584856 u (per nucleus)Nuclear binding energy:892.82358549 MeV (per nucleus)
8.58484217 MeV (average binding energy per nucleon)Separation energy:S_N = 10.0092(16) MeV (first neutron)
S_P = 8.6524(27) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.5078(27) femtometer fmYear of discovery:1935

Parent Nuclides

Direct parent isotopes are: ¹⁰⁴Ag, ¹⁰⁴Rh.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Palladium Isotopic mixture	106.42 u	100 %
Isotope ¹⁰²Pd	101.90560(2) u	1.02(1) %	stable	0+
Isotope ¹⁰⁴Pd	103.904031(9) u	11.14(8) %	stable	0+
Isotope ¹⁰⁵Pd	104.905080(8) u	22.33(8) %	stable	5/2+
Isotope ¹⁰⁶Pd	105.903480(8) u	27.33(3) %	stable	0+
Isotope ¹⁰⁸Pd	107.903892(8) u	26.46(9) %	stable	0+
Isotope ¹¹⁰Pd	109.905172(5) u	11.72(9) %	stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 58) and isobaric (same nucleon number A = 104) with Palladium-104. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 58	Isobar A = 104
32	⁹⁰Ge
33	⁹¹As
34	⁹²Se
35	⁹³Br
36	⁹⁴Kr
37	⁹⁵Rb
38	⁹⁶Sr	¹⁰⁴Sr
39	⁹⁷Y	¹⁰⁴Y
40	⁹⁸Zr	¹⁰⁴Zr
41	⁹⁹Nb	¹⁰⁴Nb
42	¹⁰⁰Mo	¹⁰⁴Mo
43	¹⁰¹Tc	¹⁰⁴Tc
44	¹⁰²Ru	¹⁰⁴Ru
45	¹⁰³Rh	¹⁰⁴Rh
46	¹⁰⁴Pd	¹⁰⁴Pd
47	¹⁰⁵Ag	¹⁰⁴Ag
48	¹⁰⁶Cd	¹⁰⁴Cd
49	¹⁰⁷In	¹⁰⁴In
50	¹⁰⁸Sn	¹⁰⁴Sn
51	¹⁰⁹Sb	¹⁰⁴Sb
52	¹¹⁰Te
53	¹¹¹I
54	¹¹²Xe
55	¹¹³Cs
56	¹¹⁴Ba