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{{Short description|none}}
{{Infobox palladium isotopes}}
Natural [[palladium]] ({{sub|46}}Pd) is composed of six stable [[isotope]]s, {{sup|102}}Pd, {{sup|104}}Pd, {{sup|105}}Pd, {{sup|106}}Pd, {{sup|108}}Pd, and {{sup|110}}Pd, although {{sup|102}}Pd and {{sup|110}}Pd are theoretically unstable. The most stable [[radioisotope]]s are [[Pd-107|{{sup|107}}Pd]] with a [[half-life]] of 6.5 million years, [[Pd-103|{{sup|103}}Pd]] with a half-life of 17 days, and {{sup|100}}Pd with a half-life of 3.63 days. Twenty-three other radioisotopes have been characterized with [[atomic weight]]s ranging from 90.949 [[atomic mass unit|u]] ({{sup|91}}Pd) to 128.96 u ({{sup|129}}Pd). Most of these have half-lives that are less than 30 minutes except {{sup|101}}Pd (half-life: 8.47 hours), {{sup|109}}Pd (half-life: 13.7 hours), and {{sup|112}}Pd (half-life: 21 hours).
The primary [[decay mode]] before the most abundant stable isotope,
[[Radiogenic]]
| author= W. R. Kelly |author2=G. J. Wasserburg
| year = 1978
Line 12 ⟶ 13:
| doi =10.1029/GL005i012p01079
| bibcode=1978GeoRL...5.1079K
|url=https://authors.library.caltech.edu/43037/
}}</ref> The discoverers suggest that the coalescence and differentiation of iron-cored small planets may have occurred 10 million years after a [[nucleosynthetic]] event. {{sup|107}}Pd versus Ag correlations observed in bodies, which have clearly been melted since accretion of the [[Solar System]], must reflect the presence of short-lived nuclides in the early Solar System.<ref>
{{cite journal
| author= J. H. Chen |author2=G. J. Wasserburg
Line 24 ⟶ 26:
== List of isotopes ==
{{Isotopes table
|symbol=
|refs=NUBASE2020, AME2020 II
|notes=m, unc(), mass#, exen#, hl#, spin(), spin#, daughter-st, IT, EC, p
}}
|-id=Palladium-90
| rowspan=3|<sup>90</sup>Pd
| rowspan=3 style="text-align:right" | 46
| rowspan=3 style="text-align:right" | 44
| rowspan=3|89.95737(43)#
| rowspan=3|10# ms<br>[>400 ns]
| [[beta decay|β<sup>+</sup>]]?
| <sup>90</sup>Rh
| rowspan=3|0+
| rowspan=3|
| rowspan=3|
|-
| β<sup>
| <sup>89</sup>Ru
|-
| 2p?
| <sup>88</sup>Ru
|-id=Palladium-91
| rowspan=2|<sup>91</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 45
| rowspan=2|90.95044(45)#
| rowspan=2|32(3) ms
| β<sup>+</sup> (96.9%)
| <sup>91</sup>Rh
| rowspan=2|7/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>
| <sup>90</sup>Ru
|-id=Palladium-92
| rowspan=2|<sup>92</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 46
| rowspan=2|91.94119(37)
| rowspan=2|1.06(3) s
| β<sup>+</sup> (98.4%)
| <sup>92</sup>Rh
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>
| <sup>91</sup>Ru
|-id=Palladium-93
| rowspan=2|<sup>93</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 47
| rowspan=2|92.93668(40)
| rowspan=2|1.17(2) s
| β<sup>+</sup> (92.6%)
| <sup>93</sup>Rh
| rowspan=2|(9/2+)
| rowspan=2|
| rowspan=2|
|-
|
| <sup>91</sup>Ru
|-id=Palladium-94
| rowspan=2|<sup>94</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 48
| rowspan=2|93.9290363(46)
| rowspan=2|9.1(3) s
| β<sup>+</sup> (>99.87%)
| <sup>94</sup>Rh
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (<0.13%)
| <sup>93</sup>Ru
|-id=Palladium-94m1
| style="text-indent:1em" | <sup>94m1</sup>Pd
| colspan="3" style="text-indent:2em" | 4883.1(4) keV
| 515(1) ns
| [[isomeric transition|IT]]
| <sup>94</sup>Pd
| (14+)
|
|
|-id=Palladium-94m2
| style="text-indent:1em" | <sup>
| colspan="3" style="text-indent:2em" |
|
| IT
| <sup>94</sup>Pd
| (
|
|
|-id=Palladium-95
| rowspan=2|<sup>95</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 49
| rowspan=2|94.9248885(33)
| rowspan=2|7.4(4) s
| β<sup>+</sup> (99.77%)
| <sup>95</sup>Rh
| rowspan=2|9/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>
| <sup>95</sup>Rh
|-id=Palladium-95m
| rowspan=3 style="text-indent:1em" | <sup>95m</sup>Pd
| rowspan=3 colspan="3" style="text-indent:2em" |
| rowspan=3|13.3(
| β<sup>+</sup> (
| <sup>95</sup>Rh
| rowspan=3|(21/2+)
Line 111 ⟶ 145:
| rowspan=3|
|-
| [[Isomeric transition|IT]] (
| <sup>95</sup>Pd
|-
| β<sup>+</sup>,
| <sup>94</sup>Ru
|-id=Palladium-96
| <sup>96</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 50
| 95.
| 122(2) s
| β<sup>+</sup>
Line 127 ⟶ 161:
|
|
|-id=Palladium-96m
| style="text-indent:1em" | <sup>96m</sup>Pd
| colspan="3" style="text-indent:2em" | 2530.
| 1.
| IT
| <sup>96</sup>Pd
| 8+#
|
|
|-id=Palladium-97
| <sup>97</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 51
| 96.
| 3.10(9) min
| β<sup>+</sup>
Line 147 ⟶ 181:
|
|
|-id=Palladium-98
| <sup>98</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 52
| 97.
| 17.7(
| β<sup>+</sup>
| <sup>98</sup>Rh
Line 158 ⟶ 192:
|
|
|-id=Palladium-99
| <sup>99</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 53
| 98.
| 21.4(2) min
| β<sup>+</sup>
Line 169 ⟶ 203:
|
|
|-id=Palladium-100
| <sup>100</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 54
| 99.
| 3.63(9) d
| [[Electron capture|EC]]
Line 180 ⟶ 214:
|
|
|-id=Palladium-101
| <sup>101</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 55
| 100.
| 8.47(6) h
| β<sup>+</sup>
Line 191 ⟶ 225:
|
|
|-id=Palladium-102
| <sup>102</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 56
| 101.
| colspan=3 align=center|'''[[Observationally Stable]]'''<ref group="n">Believed to decay by β<sup>+</sup>β<sup>+</sup> to '''<sup>102</sup>Ru''' with a half-life over 7.6×10<sup>18</sup> y</ref>
| 0+
| 0.0102(1)
|
|-
| <sup>103</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 57
| 102.
| 16.991(19) d
| EC
Line 211 ⟶ 245:
|
|
|-id=Palladium-104
| <sup>104</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 58
| 103.
| colspan=3 align=center|'''Stable'''
| 0+
| 0.1114(8)
|
|-id=Palladium-105
| <sup>105</sup>Pd<ref group="n" name="FP">[[Fission product]]</ref>
| style="text-align:right" | 46
| style="text-align:right" | 59
| 104.
| colspan=3 align=center|'''Stable'''
| 5/2+
| 0.2233(8)
|
|-id=Palladium-105m
| style="text-indent:1em" | <sup>105m</sup>Pd
| colspan="3" style="text-indent:2em" | 489.1(3) keV
| 35.5(5) μs
| IT
| '''<sup>105</sup>Pd'''
| 11/2−
|
|
|-id=Palladium-106
| <sup>106</sup>Pd<ref group="n" name="FP" />
| style="text-align:right" | 46
| style="text-align:right" | 60
| 105.
| colspan=3 align=center|'''Stable'''
| 0+
| 0.2733(3)
Line 251 ⟶ 285:
| style="text-align:right" | 46
| style="text-align:right" | 61
| 106.
| 6.5(3)×10<sup>6</sup> y
| β<sup>−</sup>
Line 258 ⟶ 292:
| trace<ref group="n">[[Cosmogenic]] nuclide, also found as nuclear contamination</ref>
|
|-id=Palladium-107m1
| style="text-indent:1em" | <sup>107m1</sup>Pd
| colspan="3" style="text-indent:2em" | 115.74(12) keV
| 0.85(10)
| IT
| <sup>107</sup>Pd
| 1/2+
|
|
|-id=Palladium-107m2
| style="text-indent:1em" | <sup>107m2</sup>Pd
| colspan="3" style="text-indent:2em" | 214.6(3) keV
Line 276 ⟶ 310:
|
|
|-id=Palladium-108
| <sup>108</sup>Pd<ref group="n" name="FP" />
| style="text-align:right" | 46
| style="text-align:right" | 62
| 107.
| colspan=3 align=center|'''Stable'''
| 0+
| 0.2646(9)
|
|-id=Palladium-109
| <sup>109</sup>Pd<ref group="n" name="FP" />
| style="text-align:right" | 46
| style="text-align:right" | 63
| 108.
| 13.
| β<sup>−</sup>
| '''<sup>
| 5/2+
|
|
|-id=Palladium-109m1
| style="text-indent:1em" | <sup>109m1</sup>Pd
| colspan="3" style="text-indent:2em" | 113.
| 380(50) ns
| IT
| <sup>109</sup>Pd
| 1/2+
|
|
|-id=Palladium-109m2
| style="text-indent:1em" | <sup>109m2</sup>Pd
| colspan="3" style="text-indent:2em" | 188.
| 4.
| IT
| <sup>109</sup>Pd
Line 314 ⟶ 348:
|
|
|-id=Palladium-110
| <sup>110</sup>Pd<ref group="n" name="FP" />
| style="text-align:right" | 46
| style="text-align:right" | 64
| 109.
| colspan=3 align=center|'''Observationally Stable'''<ref group="n">Believed to decay by β<sup>−</sup>β<sup>−</sup> to '''<sup>110</sup>Cd''' with a
| 0+
| 0.1172(9)
|
|-id=Palladium-111
| <sup>111</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 65
| 110.
| 23.
| β<sup>−</sup>
| <sup>
| 5/2+
|
|
|-id=Palladium-111m
| rowspan=2 style="text-indent:1em" | <sup>111m</sup>Pd
| rowspan=2 colspan="3" style="text-indent:2em" | 172.18(8) keV
| rowspan=2|5.
| IT (76.8%)
| <sup>111</sup>Pd
| rowspan=2|11/2−
Line 344 ⟶ 378:
| rowspan=2|
|-
| β<sup>−</sup> (23.2%)
| <sup>
|-id=Palladium-112
| <sup>112</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 66
| 111.
| 21.
| β<sup>−</sup>
| <sup>112</sup>Ag
Line 357 ⟶ 391:
|
|
|-id=Palladium-113
| <sup>113</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 67
| 112.
| 93(5) s
| β<sup>−</sup>
| <sup>
| (5/2+)
|
|
|-id=Palladium-113m
| style="text-indent:1em" | <sup>113m</sup>Pd
| colspan="3" style="text-indent:2em" | 81.1(3) keV
Line 377 ⟶ 411:
|
|
|-id=Palladium-114
| <sup>114</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 68
| 113.
| 2.42(6) min
| β<sup>−</sup>
Line 388 ⟶ 422:
|
|
|-id=Palladium-115
| <sup>115</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 69
| 114.9136650(19)<ref name="jaries2024">{{cite journal |last1=Jaries |first1=A. |last2=Stryjczyk |first2=M. |last3=Kankainen |first3=A. |last4=Ayoubi |first4=L. Al |last5=Beliuskina |first5=O. |last6=Canete |first6=L. |last7=de Groote |first7=R. P. |last8=Delafosse |first8=C. |last9=Delahaye |first9=P. |last10=Eronen |first10=T. |last11=Flayol |first11=M. |last12=Ge |first12=Z. |last13=Geldhof |first13=S. |last14=Gins |first14=W. |last15=Hukkanen |first15=M. |last16=Imgram |first16=P. |last17=Kahl |first17=D. |last18=Kostensalo |first18=J. |last19=Kujanpää |first19=S. |last20=Kumar |first20=D. |last21=Moore |first21=I. D. |last22=Mougeot |first22=M. |last23=Nesterenko |first23=D. A. |last24=Nikas |first24=S. |last25=Patel |first25=D. |last26=Penttilä |first26=H. |last27=Pitman-Weymouth |first27=D. |last28=Pohjalainen |first28=I. |last29=Raggio |first29=A. |last30=Ramalho |first30=M. |last31=Reponen |first31=M. |last32=Rinta-Antila |first32=S. |last33=de Roubin |first33=A. |last34=Ruotsalainen |first34=J. |last35=Srivastava |first35=P. C. |last36=Suhonen |first36=J. |last37=Vilen |first37=M. |last38=Virtanen |first38=V. |last39=Zadvornaya |first39=A. |title=Physical Review C - Accepted Paper: Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL |journal=journals.aps.org |url=https://journals.aps.org/prc/accepted/fe077P3cDac1f601a8c16c34b19fb124fc3509f19 |arxiv=2403.04710}}</ref>
| 25(2) s
| β<sup>−</sup>
| <sup>
| (
|
|
|-id=Palladium-115m
| rowspan=2 style="text-indent:1em" | <sup>115m</sup>Pd
| rowspan=2 colspan="3" style="text-indent:2em" |
| rowspan=2|50(3) s
| β<sup>−</sup> (92.0%)
| <sup>115</sup>Ag
| rowspan=2|(
| rowspan=2|
| rowspan=2|
|-
| IT (8.0%)
| <sup>115</sup>Pd
|-id=Palladium-116
| <sup>116</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 70
| 115.
| 11.8(4) s
| β<sup>−</sup>
Line 422 ⟶ 456:
|
|
|-id=Palladium-117
| <sup>117</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 71
| 116.
| 4.3(3) s
| β<sup>−</sup>
| <sup>
| (
|
|
|-id=Palladium-117m
| style="text-indent:1em" | <sup>117m</sup>Pd
| colspan="3" style="text-indent:2em" | 203.
| 19.1(7) ms
| IT
| <sup>117</sup>Pd
| (
|
|
|-id=Palladium-118
| <sup>118</sup>Pd
| style="text-align:right" | 46
| style="text-align:right" | 72
| 117.
| 1.9(1) s
| β<sup>−</sup>
Line 453 ⟶ 487:
|
|
|-id=Palladium-119
| rowspan=2|<sup>119</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 73
| rowspan=2|118.9231238(45)<ref name="jaries2024"/>
| rowspan=2|0.
| β<sup>−</sup>
| <sup>119</sup>Ag
| rowspan=2|1/2+, 3/2+<ref name="kurpeta2022">{{cite journal |last1=Kurpeta |first1=J. |last2=Abramuk |first2=A. |last3=Rząca-Urban |first3=T. |last4=Urban |first4=W. |last5=Canete |first5=L. |last6=Eronen |first6=T. |last7=Geldhof |first7=S. |last8=Gierlik |first8=M. |last9=Greene |first9=J. P. |last10=Jokinen |first10=A. |last11=Kankainen |first11=A. |last12=Moore |first12=I. D. |last13=Nesterenko |first13=D. A. |last14=Penttilä |first14=H. |last15=Pohjalainen |first15=I. |last16=Reponen |first16=M. |last17=Rinta-Antila |first17=S. |last18=de Roubin |first18=A. |last19=Simpson |first19=G. S. |last20=Smith |first20=A. G. |last21=Vilén |first21=M. |title=β - and γ -spectroscopy study of Pd 119 and Ag 119 |journal=Physical Review C |date=14 March 2022 |volume=105 |issue=3 |doi=10.1103/PhysRevC.105.034316}}</ref>
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n?
| <sup>118</sup>Ag
|-id=Palladium-119m
| style="text-indent:1em" | <sup>119m</sup>Pd<ref name="jaries2024"/>
| colspan="3" style="text-indent:2em" | 199.1(30) keV
| 0.85(1) s
| IT
| <sup>119</sup>Pd
| (11/2−)<ref name="kurpeta2022"/>
|
|
|-id=Palladium-120
| rowspan=2|<sup>120</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 74
| rowspan=2|119.9245517(25)
| rowspan=2|492(33) ms
| β<sup>−</sup> (>99.3%)
| <sup>120</sup>Ag
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>
| <sup>119</sup>Ag
|-id=Palladium-121
| rowspan=2|<sup>121</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 75
| rowspan=2|120.9289513(40)<ref name="jaries2024"/>
| rowspan=2|290(1) ms
| β<sup>−</sup> (>99.2%)
| <sup>121</sup>Ag
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (<0.8%)
| <sup>120</sup>Ag
|-id=Palladium-121m1
| style="text-indent:1em" | <sup>121m1</sup>Pd
| colspan="3" style="text-indent:2em" | 135.5(5) keV
| 460(90) ns
| IT
| <sup>121</sup>Pd
| 7/2+#
|
|
|-id=Palladium-121m2
| style="text-indent:1em" | <sup>121m2</sup>Pd
| colspan="3" style="text-indent:2em" | 160(14) keV
| 460(90) ns
| IT
| <sup>121</sup>Pd
| 11/2−#
|
|
|-id=Palladium-122
| rowspan=2|<sup>122</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" |
| rowspan=2|121.930632(21)
| rowspan=2|193(5) ms
| β<sup>−</sup>
| <sup>122</sup>Ag
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>
| <sup>121</sup>Ag
|-id=Palladium-123
| rowspan=2|<sup>123</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 77
| rowspan=2|122.93513(85)
| rowspan=2|108(1) ms
| β<sup>−</sup> (90%)
| <sup>123</sup>Ag
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (10%)
| <sup>122</sup>Ag
|-id=Palladium-123m
| rowspan=2 style="text-indent:1em" | <sup>123m</sup>Pd
| rowspan=2 colspan="3" style="text-indent:2em" | 100(50)# keV
| rowspan=2|100# ms
| β<sup>−</sup>
| <sup>123</sup>Ag
| rowspan=2|11/2−#
| rowspan=2|
| rowspan=2|
|-
| IT?
| <sup>123</sup>Pd
|-id=Palladium-124
| rowspan=2|<sup>124</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 78
| rowspan=2|123.93731(32)#
| rowspan=2|88(15) ms
| β<sup>−</sup> (83%)
| <sup>124</sup>Ag
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (17%)
| <sup>123</sup>Ag
|-id=Palladium-124m
| style="text-indent:1em" | <sup>124m</sup>Pd
| colspan="3" style="text-indent:2em" | 1000(800)# keV
| >20 μs
| IT
| <sup>124</sup>Pd
| 11/2−#
|
|
|-id=Palladium-125
| rowspan=2|<sup>125</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 79
| rowspan=2|124.94207(43)#
| rowspan=2|60(6) ms
| β<sup>−</sup> (88%)
| <sup>125</sup>Ag
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (12%)
| <sup>124</sup>Ag
|-id=Palladium-125m1
| rowspan=2 style="text-indent:1em" | <sup>125m1</sup>Pd
| rowspan=2 colspan="3" style="text-indent:2em" | 100(50)# keV
| rowspan=2|50# ms
| β<sup>−</sup>
| <sup>125</sup>Ag
| rowspan=2|11/2−#
| rowspan=2|
| rowspan=2|
|-
| IT?
| <sup>125</sup>Pd
|-id=Palladium-125m2
| style="text-indent:1em" | <sup>125m2</sup>Pd
| colspan="3" style="text-indent:2em" | 1805.23(18) keV
| 144(4) ns
| IT
| <sup>125</sup>Pd
| (23/2+)
|
|
|-id=Palladium-126
| rowspan=2|<sup>126</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" |
| rowspan=2|125.94440(43)#
| rowspan=2|48.6(8) ms
| β<sup>−</sup> (78%)
| <sup>126</sup>Ag
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (22%)
| <sup>125</sup>Ag
|-id=Palladium-126m1
| style="text-indent:1em" | <sup>126m1</sup>Pd
| colspan="3" style="text-indent:2em" | 2023.5(7) keV
| 330(40) ns
| IT
| <sup>126</sup>Pd
| (5−)
|
|
|-id=Palladium-126m2
| style="text-indent:1em" | <sup>126m2</sup>Pd
| colspan="3" style="text-indent:2em" |
| 440(30) ns
| IT
| <sup>
| (7−)
|
|
|-id=Palladium-126m3
| rowspan=2 style="text-indent:1em" | <sup>126m3</sup>Pd
| rowspan=2 colspan="3" style="text-indent:2em" | 2406.0(10) keV
| rowspan=2|23.0(8) ms
| β<sup>−</sup> (72%)
| <sup>126</sup>Ag
| rowspan=2|(10+)
| rowspan=2|
| rowspan=2|
|-
| IT (28%)
| <sup>126</sup>Pd
|-id=Palladium-127
| rowspan=3|<sup>127</sup>Pd
| rowspan=3 style="text-align:right" | 46
| rowspan=3 style="text-align:right" | 81
| rowspan=3|126.94931(54)#
| rowspan=3|38(2) ms
| β<sup>−</sup> (>81%)
| <sup>127</sup>Ag
| rowspan=3|11/2−#
| rowspan=3|
| rowspan=3|
|-
| β<sup>
| <sup>126</sup>Ag
|-
| β<sup>−</sup>, 2n?
| <sup>125</sup>Ag
|-id=Palladium-127m
| style="text-indent:1em" | <sup>127m</sup>Pd
| colspan="3" style="text-indent:2em" | 1717.91(23) keV
| 39(6) μs
| IT
| <sup>127</sup>Pd
| (19/2+)
|
|
|-id=Palladium-128
| rowspan=2|<sup>128</sup>Pd
| rowspan=2 style="text-align:right" | 46
| rowspan=2 style="text-align:right" | 82
| rowspan=2|127.95235(54)#
| rowspan=2|35(3) ms
| β<sup>−</sup>
| <sup>128</sup>Ag
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n?
| <sup>127</sup>Ag
|-id=Palladium-128m
| style="text-indent:1em" | <sup>128m</sup>Pd
| colspan="3" style="text-indent:2em" | 2151.0(10) keV
| 5.8(8)
| IT
| <sup>128</sup>Pd
| (8+)
|
|
|-id=Palladium-129
| rowspan=3|<sup>129</sup>Pd
| rowspan=3 style="text-align:right" | 46
| rowspan=3 style="text-align:right" | 83
| rowspan=3|128.95933(64)#
| rowspan=3|31(7) ms
| β<sup>−</sup>
| <sup>129</sup>Ag
| rowspan=3|7/2−#
| rowspan=3|
| rowspan=3|
|-
| β<sup>
| <sup>128</sup>Ag
|-
| β<sup>−</sup>, 2n?
| <sup>127</sup>Ag
|-id=Palladium-130
| rowspan=3|<sup>130</sup>Pd
| rowspan=3 style="text-align:right" | 46
| rowspan=3 style="text-align:right" | 84
| rowspan=3|129.96486(32)#
| rowspan=3|27# ms<br>[>550 ns]
| β<sup>−</sup>
| <sup>130</sup>Ag
| rowspan=3|0+
| rowspan=3|
| rowspan=3|
|-
| β<sup>−</sup>, n?
| <sup>129</sup>Ag
|-
| β<sup>−</sup>, 2n?
| <sup>128</sup>Ag
|-id=Palladium-131
| rowspan=3|<sup>131</sup>Pd
| rowspan=3 style="text-align:right" | 46
| rowspan=3 style="text-align:right" | 85
| rowspan=3|130.97237(32)#
| rowspan=3|20# ms<br>[>550 ns]
| β<sup>−</sup>
| <sup>131</sup>Ag
| rowspan=3|7/2−#
| rowspan=3|
| rowspan=3|
|-
| β<sup>−</sup>, n?
| <sup>130</sup>Ag
|-
| β<sup>−</sup>, 2n?
| <sup>129</sup>Ag
{{Isotopes table/footer}}
Line 610 ⟶ 808:
'''Palladium-107''' is the second-longest lived ([[half-life]] of 6.5 million years<ref name="webelements" />) and least radioactive ([[decay energy]] only 33 [[keV]], [[specific activity]] 5{{e|-5}} Ci/g) of the 7 long-lived [[fission products]]. It undergoes pure [[beta decay]] (without [[gamma radiation]]) to [[Silver-107|<sup>107</sup>Ag]], which is stable.
Its yield from [[thermal neutron]] fission of [[uranium-235]] is 0.
One source<ref>{{cite journal |author=R. P. Bush |title=Recovery of Platinum Group Metals from High Level Radioactive Waste |journal=Platinum Metals Review |year=1991 |volume=35 |issue=4 |pages=202–208 |doi=10.1595/003214091X354202208 |url=http://www.platinummetalsreview.com/pdf/pmr-v35-i4-202-208.pdf |access-date=2011-04-02 |archive-date=2015-09-24 |archive-url=https://web.archive.org/web/20150924074421/http://www.platinummetalsreview.com/pdf/pmr-v35-i4-202-208.pdf |url-status=dead }}</ref> estimates that palladium produced from fission contains the isotopes <sup>104</sup>Pd (16.9%),<sup>105</sup>Pd (29.3%), <sup>106</sup>Pd (21.3%), <sup>107</sup>Pd (17%), <sup>108</sup>Pd (11.7%) and <sup>110</sup>Pd (3.8%). According to another source, the proportion of <sup>107</sup>Pd is 9.2% for palladium from thermal neutron fission of [[Uranium-235|<sup>235</sup>U]], 11.8% for <sup>233</sup>U, and 20.4% for <sup>239</sup>Pu (and the <sup>239</sup>Pu yield of palladium is about 10 times that of <sup>235</sup>U).
Because of this dilution and because <sup>105</sup>Pd has 11 times the [[neutron absorption]] [[Neutron cross section|cross section]], <sup>107</sup>Pd is not amenable to disposal by [[nuclear transmutation]]. However, as a [[noble metal]], palladium is not as mobile in the environment as iodine or technetium.
Line 622 ⟶ 820:
**{{NUBASE 2003}}
* Isotopic compositions and standard atomic masses from:
**{{
**{{CIAAW 2005}}
* Half-life, spin, and isomer data selected from the following sources.
|