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Isotopes of Silver

List, data and properties of all known isotopes of Silver as well as radioactive decay products and intermediate products.

 

Silver isotopes

Natural occurrences of the chemical element silver are composed of two isotopes in an approximate ratio of 1:1. These two silver isotopes 107 and 109 are considered stable and are NMR active.

 

Naturally Occurring Silver Isotopes

Atomic Mass maQuantityHalf-lifeSpin
Silver
Isotopic mixture
107,8682 u100 %
Isotope 107Ag106,90509(2) u51,839(8) %stable1/2-
Isotope 109Ag108,904755(9) u48,161(8) %stable1/2-

 

In addition to the stable silver isotopes, 28 other nuclides are known.

 

Isotope Table: Silver

 

Atomic Properties

Isotope
Nuclide
ZANNameAtomic Mass
[Nuclear Mass]
{Mass Excess}
Spin I
(h/2π)
μParent
123456789
92Ag479245Silver-9291.96014(54) u
[91.9343581 u]
{-37.12935 MeV}
93Ag479346Silver-9392.95033(43) u
[92.9245481 u]
{-46.26731 MeV}
94Ag479447Silver-9493.94374(43) u
[93.9179581 u]
{-52.40585 MeV}
(0+)
94m1Ag479447Silver-94m193.94374(43) u
[93.9179581 u]
{-52.40585 MeV}
(7+)
94m2Ag479447Silver-94m293.94374(43) u
[93.9179581 u]
{-52.40585 MeV}
(21+)
95Ag479548Silver-9594.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(9/2+)
95m1Ag479548Silver-95m194.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(1/2-)
95m2Ag479548Silver-95m294.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(23/2+)
95m3Ag479548Silver-95m394.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(37/2+)
96Ag479649Silver-9695.93074(10) u
[95.9049581 u]
{-64.51527 MeV}
(8)+
96mAg479649Silver-96m95.93074(10) u
[95.9049581 u]
{-64.51527 MeV}
(2+)
97Ag479750Silver-9796.92397(12) u
[96.8981881 u]
{-70.82149 MeV}
(9/2+)+6.13(12)
98Ag479851Silver-9897.92156(4) u
[97.8957781 u]
{-73.06639 MeV}
(6+)4.5798Cd
99Ag479952Silver-9998.917646(7) u
[98.8918641 u]
{-76.71226 MeV}
(9/2+)+5.81(3)
99mAg479952Silver-99m98.917646(7) u
[98.8918641 u]
{-76.71226 MeV}
(1/2-)99Cd
100In
100Ag4710053Silver-10099.916115(5) u
[99.8903331 u]
{-78.13837 MeV}
(5)++4.37(3)
100mAg4710053Silver-100m99.916115(5) u
[99.8903331 u]
{-78.13837 MeV}
(2)+100Cd
101In
101Ag4710154Silver-101100.912684(5) u
[100.8869021 u]
{-81.33433 MeV}
9/2+5.619(11)101Cd
101mAg4710154Silver-101m100.912684(5) u
[100.8869021 u]
{-81.33433 MeV}
(1/2)-
102Ag4710255Silver-102101.911705(9) u
[101.8859231 u]
{-82.24626 MeV}
5(+)+ 4.6(7)102Cd
102mAg4710255Silver-102m101.911705(9) u
[101.8859231 u]
{-82.24626 MeV}
2++ 4.1(3)
103Ag4710356Silver-103102.908961(4) u
[102.8831791 u]
{-84.80228 MeV}
7/2++ 4.426(2)103Cd
103mAg4710356Silver-103m102.908961(4) u
[102.8831791 u]
{-84.80228 MeV}
1/2-
104Ag4710457Silver-104103.908624(4) u
[103.8828421 u]
{-85.1162 MeV}
5++ 3.914(3)104Cd
104mAg4710457Silver-104m103.908624(4) u
[103.8828421 u]
{-85.1162 MeV}
2++ 3.686(3)
105Ag4710558Silver-105104.906526(5) u
[104.8807441 u]
{-87.07047 MeV}
1/2-0.1013(10)105Cd
105mAg4710558Silver-105m104.906526(5) u
[104.8807441 u]
{-87.07047 MeV}
7/2++ 4.408(13)
106Ag4710659Silver-106105.906664(3) u
[105.8808821 u]
{-86.94192 MeV}
1++ 2.8(2)
106mAg4710659Silver-106m105.906664(3) u
[105.8808821 u]
{-86.94192 MeV}
6+(+) 3.704(4)
107Ag4710760Silver-107106.90509(2) u
[106.8793081 u]
{-88.4081 MeV}
1/2-- 0.11352(5)107Cd
107Pd
107mAg4710760Silver-107m106.90509(2) u
[106.8793081 u]
{-88.4081 MeV}
7/2+(+) 4.392(5)
108Ag4710861Silver-108107.9059503(26) u
[107.8801684 u]
{-87.60673 MeV}
1+2.6838(16)
108mAg4710861Silver-108m107.9059503(26) u
[107.8801684 u]
{-87.60673 MeV}
6+3.58(2)
109Ag4710962Silver-109108.904755(9) u
[108.8789731 u]
{-88.72015 MeV}
1/2-0.13051(5)109Cd
109Pd
109mAg4710962Silver-109m108.904755(9) u
[108.8789731 u]
{-88.72015 MeV}
7/2+4.394(6)
110Ag4711063Silver-110109.9061107(14) u
[109.8803288 u]
{-87.45732 MeV}
1+2.7225(14)
110m1Ag4711063Silver-110m1109.9061107(14) u
[109.8803288 u]
{-87.45732 MeV}
2-
110m2Ag4711063Silver-110m2109.9061107(14) u
[109.8803288 u]
{-87.45732 MeV}
6++ 3.602(4)
111Ag4711164Silver-111110.9052968(16) u
[110.8795149 u]
{-88.21546 MeV}
1/2-- 0.146(2)111Pd
111mAg4711164Silver-111m110.9052968(16) u
[110.8795149 u]
{-88.21546 MeV}
7/2+
112Ag4711265Silver-112111.9070485(26) u
[111.8812666 u]
{-86.58376 MeV}
2(-)0.0547(5)112Pd
113Ag4711366Silver-113112.906573(18) u
[112.8807911 u]
{-87.02669 MeV}
1/2-0.159(2)113Pd
113mAg4711366Silver-113m112.906573(18) u
[112.8807911 u]
{-87.02669 MeV}
7/2+
114Ag4711467Silver-114113.908823(5) u
[113.8830411 u]
{-84.93083 MeV}
1+114Pd
115Ag4711568Silver-115114.908767(20) u
[114.8829851 u]
{-84.98299 MeV}
1/2-115Pd
252Cf
115mAg4711568Silver-115m114.908767(20) u
[114.8829851 u]
{-84.98299 MeV}
7/2+
116Ag4711669Silver-116115.911387(3) u
[115.8856051 u]
{-82.54248 MeV}
(0-)116Pd
116m1Ag4711669Silver-116m1115.911387(3) u
[115.8856051 u]
{-82.54248 MeV}
(3+)
116m2Ag4711669Silver-116m2115.911387(3) u
[115.8856051 u]
{-82.54248 MeV}
(6-)
117Ag4711770Silver-117116.911774(15) u
[116.8859921 u]
{-82.18199 MeV}
(1/2-)117Pd
117mAg4711770Silver-117m116.911774(15) u
[116.8859921 u]
{-82.18199 MeV}
(7/2+)
118Ag4711871Silver-118117.9145955(27) u
[117.8888136 u]
{-79.55378 MeV}
1(-)118Pd
118mAg4711871Silver-118m117.9145955(27) u
[117.8888136 u]
{-79.55378 MeV}
4(+)
119Ag4711972Silver-119118.915570(16) u
[118.8897881 u]
{-78.64604 MeV}
(7/2+)119Pd
119mAg4711972Silver-119m118.915570(16) u
[118.8897881 u]
{-78.64604 MeV}
(1/2-)
120Ag4712073Silver-120119.918785(5) u
[119.8930031 u]
{-75.65129 MeV}
3(+)120Pd
120mAg4712073Silver-120m119.918785(5) u
[119.8930031 u]
{-75.65129 MeV}
6(-)
121Ag4712174Silver-121120.920125(13) u
[120.8943431 u]
{-74.40308 MeV}
(7/2+)
122Ag4712275Silver-122121.92366(4) u
[121.8978781 u]
{-71.11025 MeV}
(3+)
122m1Ag4712275Silver-122m1121.92366(4) u
[121.8978781 u]
{-71.11025 MeV}
(1-)
122m2Ag4712275Silver-122m2121.92366(4) u
[121.8978781 u]
{-71.11025 MeV}
(9-)
123Ag4712376Silver-123122.92534(3) u
[122.8995581 u]
{-69.54534 MeV}
(7/2+)
124Ag4712477Silver-124123.92893(27) u
[123.9031481 u]
{-66.20128 MeV}
(3+)
125Ag4712578Silver-125124.93073(46) u
[124.9049481 u]
{-64.52459 MeV}
(9/2+)
125mAg4712578Silver-125m124.93073(46) u
[124.9049481 u]
{-64.52459 MeV}
(17/2-)
126Ag4712679Silver-126125.93486(21) u
[125.9090781 u]
{-60.67752 MeV}
(3+)
127Ag4712780Silver-127126.93726(21) u
[126.9114781 u]
{-58.44193 MeV}
128Ag4712881Silver-128127.94136(32) u
[127.9155781 u]
{-54.62281 MeV}
129Ag4712982Silver-129128.94420(43) u
[128.9184181 u]
{-51.97737 MeV}
(9/2+)
129mAg4712982Silver-129m128.94420(43) u
[128.9184181 u]
{-51.97737 MeV}
(1/2-)
130Ag4713083Silver-130129.95094(54) u
[129.9251581 u]
{-45.6991 MeV}
131Ag4713184Silver-131130.95665(54) u
[130.9308681 u]
{-40.38026 MeV}
132Ag4713285Silver-132131.96372(54) u
[131.9379381 u]
{-33.7946 MeV}

 

Radioactive Decay Properties

IsotopeRadioactive DecayAEExtern
Half-lifeDecay ModeProbabilityEnergy
1101112131415
Ag-92EC/β+92Pd
EC, p → 91Rh
p → 91Pd
?
?
?


Ag-93228(16) nsEC/β+93Pd
EC, p → 92Rh
p → 92Pd
?
?
?
12.73(50) MeV

AL
Ag-9426 msEC/β+94Pd
EC, p → 93Rh
100 %
?
13.69(40) MeV
AL
Ag-94m10.55(6) sEC → 94Pd
EC, p → 93Rh
80 %
20 %

+x keV
Ag-94m20.40(4) sEC → 94Pd
EC, p → 93Rh
p → 93Pd
2p → 92Rh
95.4(7) %
27 %
4.1(6) %
0.5(3) %



6670 keV
Ag-951.75(12) sEC/β+95Pd
EC, p → 94Rh
100 %
?
10.37(30) MeV
AL
Ag-95m1500 msIso → 95Ag100 %344.2(3) keV
Ag-95m216 msIso → 95Ag100 %2531.3(15) keV
Ag-95m340 msIso → 95Ag100 %4860.0(15) keV
Ag-964.40(6) sEC/β+96Pd
EC, p → 95Rh
91.5 %
8.5 %
11.67(9) MeV
AL
Ag-96m6.9(6) sEC/β+96Pd
EC, p → 95Rh
82 %
18 %

+y keV
Ag-9725.5(3) sEC → 97Pd100 %6.98(11) MeVAL
Ag-9847.5(3) sEC/β+98Pd
EC, p → 97Rh
99.9988 %
0.0011 %
0.825(30) MeV
AL
Ag-99124(3) sEC/β+99Pd100 %5.470(8) MeVAL
Ag-99m10.5(5) sIso → 99Ag100 %506.2(4) keV
Ag-1002.01(9) minEC/β+100Pd100 %7.075(18) MeVAL
Ag-100m2.24(13) minEC/β+100Pd
Iso → 100Ag
?
?

15.52(16) keV
Ag-10111.1(3) minEC/β+101Pd100 %4.098(7) MeVAL
Ag-101m3.10(10) sIso → 101Ag100 %274.1(3) keV
Ag-10212.9(3) minEC/β+102Pd100 %5.656(8) MeVAL
Ag-102m7.7(5) minEC/β+102Pd
Iso → 102Ag
51(5) %
49(5) %

9.40(7) keV
Ag-10365.7(7) minEC/β+103Pd100 %2.654(4) MeVAL
Ag-103m5.7(3) sIso → 103Ag100 %134.45(4) keV
Ag-10469.2(10) minEC/β+104Pd100 %4.279(4) MeVAL
Ag-104m33.5(20) minEC/β+104Pd
Iso → 104Ag
> 99.93 %
< 0.07 %

6.90(22) keV
Ag-10541.29(7) dEC/β+105Pd100 %1.347(5) MeVAL
Ag-105m7.23(16) minEC/β+105Pd
Iso → 105Ag
0.34 %
99.66(7) %

25.479(16) keV
Ag-10623.96(4) minEC/β+106Pd
β-106Cd
99.5(5) %
0.5 %
2.965(3) MeV
0.1898(28) MeV
AL
Ag-106m8.28(2) dEC/β+106Pd100 %89.66(7) keV
Ag-107stableAL
Ag-107m44.3(2) sIso → 107Ag100 %93.125(19) keV
Ag-1082.382(11) minEC/β+108Pd
β-108Cd
2.85(29) %
97.15(20) %
1.9174(26) MeV
1.6457(26) MeV
AL
Ag-108m438(9) aEC/β+108Pd
Iso → 108Ag
91.3(9) %
8.7(9) %

109.466(7) keV
Ag-109stableAL
Ag-109m39.79(21) sIso → 109Ag100 %88.03337(10) keV
Ag-11024.56(11) sEC → 110Pd
β-110Cd
0.30(6) %
99.70(6) %
0.8736(14) MeV
2.8907(13) MeV
AL
Ag-110m1660(40) ns1.112(16) keV
Ag-110m2249.83(4) dIso → 110Ag
β-110Cd
1.33(8) %
98.67(8) %

117.59(5) keV
Ag-1117.45(1) dβ-111Cd100 %1.0368(14) MeVAL
Ag-111m64.8(8) sβ-111Cd
Iso → 111Ag
0.7(2) %
99.3(2) %

59.82(4) keV
Ag-1123.130(9) hβ-112Cd100 %3.9911(24) MeVAL
Ag-1135.37(5) hβ-113Cd100 %2.016(17) MeVAL
Ag-113m68.7(16) sβ-113Cd
Iso → 113Ag
36(7) %
64(7) %

43.5(1) keV
Ag-1144.6(1) sβ-114Cd
MeV
100 %
5.084(5) MeV
AL
Ag-11520.0(5) minβ-115Cd100 %3.102(18) MeVAL
Ag-115m18.0(7) sβ-115Cd
Iso → 115Ag
79.0(3) %
21.0(3) %

41.16(10) keV
Ag-116230(5) sβ-116Cd100 %6.170(3) MeVAL
Ag-116m120(1) sβ-116Cd
Iso → 116Ag
93.0 %
7.0 %

47.90(10) keV
Ag-116m29.3(3) sβ-116Cd
Iso → 116Ag
92.0 %
8.0 %

129.80(22) keV
Ag-117ca. 72.8 sβ-117Cd100 %4.236(14) MeVAL
Ag-117m5.34(5) sβ-117Cd
Iso → 117Ag
94.0(15) %
6.0(15) %

28.6(2) keV
Ag-1183.76(15) sβ-118Cd100 %7.148(20) MeVAL
Ag-118m2.0(2) sβ-118Cd
Iso → 118Ag
59 %
41 %

127.63(10) keV
Ag-1192.1(1) sβ-119Cd100 %5.33(40) MeV0 + X keVAL
Ag-119m6.0(5) sβ-119Cd100 %+y keVAL
Ag-1201.23(4) sβ-120Cd
β-, n → 119Cd
> 99.997 %
< 0.003 %
8.306(6) MeV
0.25(4) MeV
AL
Ag-120m0.32(4) sβ-120Cd
Iso → 120Ag
ca. 63 %
ca. 37 %

203.0(10) keV
Ag-1210.78(2) sβ-121Cd
β-, n → 120Cd
99.92 %
0.08 %
6.671(12) MeV
1.483(13) MeV
AL
Ag-122529(13) msβ-122Cd
β-, n → 121Cd
99.8 %
0.186(10) %
9.510(4) MeV
1.90(4) MeV
AL
Ag-122m10.55(5) sβ-122Cd
β-, n → 121Cd
Iso → 122Ag
?
?
?


+x keV
Ag-122m20.20(5) sβ-122Cd
β-, n → 121Cd
?
?

80(50) keV
Ag-123298(8) msβ-123Cd
β-, n → 122Cd
99.45 %
0.55(7) %
7.87(3) MeV
2.99(3) MeV
AL
Ag-124191(28) msβ-124Cd
β-, n → 123Cd
98.7 %
1.3(9) %
10.50(25) MeV
3.14(25) MeV
AL
Ag-125159(8) msβ-125Cd
β-, n → 124Cd

?
8.83(43) MeV
4.11(43) MeV
AL
Ag-125m0.491(20) μsIso → 125Ag100 %1.5012(6) keV
Ag-12652(10) msβ-126Cd
β-, n → 125Cd
100 %
?
11.58(29) MeV
4.60(20) MeV
+xAL
Ag-127109(25) msβ-127Cd100 %10.31(20) MeVAL
Ag-12858(5) msβ-128Cd
β-, n → 127Cd
100 %
?
12.62(30) MeV
6.06(30) MeV
AL
Ag-12946 msβ-129Cd
β-, n → 128Cd
100 %
?
11.08(40) MeV
7.19(40) MeV
AL
Ag-129m160 msβ-129Cd
β-, n → 128Cd
> 0 %
?

+x keV
Ag-13042(5) msβ-130Cd
β-, n → 129Cd
β-, 2n → 128Cd

?
?


AL
Ag-13135(8) msβ-131Cd
β-, n → 130Cd
β-, 2n → 129Cd
100 %
?
?
14.84(51) MeV
12.67(50) MeV
Ag-13228 msβ-132Cd
β-, n → 131Cd
β-, 2n → 130Cd
β-, 3n → 129Cd
100 %
?
?
?
16.47(54) MeV
13.36(51) MeV

 

Notes (related to the columns):

1 - nuclide, isotope symbol.
2 - Z = number of protons (atomic number).
3 - Mass number A.
4 - N = number of neutrons.
5 - Identification of the Silver isotope.
6 - Relative atomic mass of the Silver isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
7 - Nuclear spin I, unit: h/2π.
8 - Nuclear magnetic moment μmag.
9 - Source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.
10 - Decay: Half-live of the Silver isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
11 - Decay: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
12 - Decay percentage in percent (%).
13 - Decay energy; Particle energy related to decay type.
14 - AE = Excitation energy for metastable nuclei.
15 - Other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

NMR active Silver nuclides

Nuclide
quantity 1)
spin
Nuclear magnetic
moment
μ/μN
Gyromagnetic
ratio
107 rad T-1 s-1
Quadrupole
moment
Q fm-2
Resonant
frequency
v0 bei 1 T
Relative
sensitivity
H0 = const.
v0 = const. 2)
107Ag
51,839(8) %
1/2-
- 0,11352(5)1,08781,73310,00007
0,0407
109Ag
48,161(8) %
1/2-
0,13051(5)1,25191,99240,00010
0,0468

1) Quantity Percentage of natural occurrence.

2) Related to 1H = 1,000.

 

Radiation Protection

According to the Radiation Protection Ordinance (StrlSchV 2018, Germany), the following values (columns 1 to 7) apply to the handling of Silver radionuclides:

NuclideLimit ValueHASS limitSCDaughter NuclidesHalf-life
Ag-102105 Bq10 Bq/g12.9 min
Ag-103106 Bq10 Bq/g1.1 h
Ag-104106 Bq10 Bq/g69.2 min
Ag-104m106 Bq10 Bq/g33.5 min
Ag-105106 Bq1 Bq/g0,1 TBq1 Bq cm-241.3 d
Ag-106106 Bq10 Bq/g24.0 min
Ag-106m106 Bq10 Bq/g8.5 d
Ag-108m+106 Bq0,1 Bq/g0,04 TBq1 Bq cm-2Ag-108418.0 a
Ag-110m+106 Bq0,1 Bq/g0,02 TBq1 Bq cm-2249.8 d
Ag-111106 Bq100 Bq/g2 TBq100 Bq cm-27.5 d
Ag-112105 Bq10 Bq/g3.1 h
Ag-115105 Bq10 Bq/g20.0 min

(HASS = High-Activity Sealed Radioactive Sources; SC = surface contamination)

 

Literature Sources and References

Properties of the Silver nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Silver: NMR properties - 107Ag-NMR, 109Ag-NMR

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

[9] - Yan Luo et al.:
Accurate and Precise Determination of Silver Isotope Fractionation in Environmental Samples by Multicollector-ICPMS.
In: Analytical Chemistry, (2010), DOI 10.1021/ac100532r.

 


Category: Isotopes

Last update: 05.07.2020



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