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Isotopes of Silver

List, data and properties of all known isotopes of Silver.


Content

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

The two following tables list the most important data and properties of the Silver isotopes. Further information on the individual Silver isotopes is listed on separate pages and can be accessed via the link in column 1.

 

Atomic Properties

Isotope
Nuclide
ENAtomic Mass
[Nuclear Mass]
{Mass Excess}
Spin I
(h/2π)
Parent
123456
Silver-929247Ag4591.96014(54) u
[91.9343581 u]
{-37.12935 MeV}
Silver-939347Ag4692.95033(43) u
[92.9245481 u]
{-46.26731 MeV}
Silver-949447Ag4793.94374(43) u
[93.9179581 u]
{-52.40585 MeV}
(0+)
Silver-94m194m147Ag4793.94374(43) u
[93.9179581 u]
{-52.40585 MeV}
(7+)
Silver-94m294m247Ag4793.94374(43) u
[93.9179581 u]
{-52.40585 MeV}
(21+)
Silver-959547Ag4894.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(9/2+)
Silver-95m195m147Ag4894.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(1/2-)
Silver-95m295m247Ag4894.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(23/2+)
Silver-95m395m347Ag4894.93602(32) u
[94.9102381 u]
{-59.59699 MeV}
(37/2+)
Silver-969647Ag4995.93074(10) u
[95.9049581 u]
{-64.51527 MeV}
(8)+
Silver-96m96m47Ag4995.93074(10) u
[95.9049581 u]
{-64.51527 MeV}
(2+)
Silver-979747Ag5096.92397(12) u
[96.8981881 u]
{-70.82149 MeV}
(9/2+)
Silver-989847Ag5197.92156(4) u
[97.8957781 u]
{-73.06639 MeV}
(6+)98Cd
Silver-999947Ag5298.917646(7) u
[98.8918641 u]
{-76.71226 MeV}
(9/2+)
Silver-99m99m47Ag5298.917646(7) u
[98.8918641 u]
{-76.71226 MeV}
(1/2-)99Cd
100In
Silver-10010047Ag5399.916115(5) u
[99.8903331 u]
{-78.13837 MeV}
(5)+
Silver-100m100m47Ag5399.916115(5) u
[99.8903331 u]
{-78.13837 MeV}
(2)+100Cd
101In
Silver-10110147Ag54100.912684(5) u
[100.8869021 u]
{-81.33433 MeV}
9/2+101Cd
Silver-101m101m47Ag54100.912684(5) u
[100.8869021 u]
{-81.33433 MeV}
(1/2)-
Silver-10210247Ag55101.911705(9) u
[101.8859231 u]
{-82.24626 MeV}
5(+)102Cd
Silver-102m102m47Ag55101.911705(9) u
[101.8859231 u]
{-82.24626 MeV}
2+
Silver-10310347Ag56102.908961(4) u
[102.8831791 u]
{-84.80228 MeV}
7/2+103Cd
Silver-103m103m47Ag56102.908961(4) u
[102.8831791 u]
{-84.80228 MeV}
1/2-
Silver-10410447Ag57103.908624(4) u
[103.8828421 u]
{-85.1162 MeV}
5+104Cd
Silver-104m104m47Ag57103.908624(4) u
[103.8828421 u]
{-85.1162 MeV}
2+
Silver-10510547Ag58104.906526(5) u
[104.8807441 u]
{-87.07047 MeV}
1/2-105Cd
Silver-105m105m47Ag58104.906526(5) u
[104.8807441 u]
{-87.07047 MeV}
7/2+
Silver-10610647Ag59105.906664(3) u
[105.8808821 u]
{-86.94192 MeV}
1+
Silver-106m106m47Ag59105.906664(3) u
[105.8808821 u]
{-86.94192 MeV}
6+
Silver-10710747Ag60106.90509(2) u
[106.8793081 u]
{-88.4081 MeV}
1/2-107Cd
107Pd
Silver-107m107m47Ag60106.90509(2) u
[106.8793081 u]
{-88.4081 MeV}
7/2+
Silver-10810847Ag61107.9059503(26) u
[107.8801684 u]
{-87.60673 MeV}
1+
Silver-108m108m47Ag61107.9059503(26) u
[107.8801684 u]
{-87.60673 MeV}
6+
Silver-10910947Ag62108.904755(9) u
[108.8789731 u]
{-88.72015 MeV}
1/2-109Cd
109Pd
Silver-109m109m47Ag62108.904755(9) u
[108.8789731 u]
{-88.72015 MeV}
7/2+
Silver-11011047Ag63109.9061107(14) u
[109.8803288 u]
{-87.45732 MeV}
1+
Silver-110m1110m147Ag63109.9061107(14) u
[109.8803288 u]
{-87.45732 MeV}
2-
Silver-110m2110m247Ag63109.9061107(14) u
[109.8803288 u]
{-87.45732 MeV}
6+
Silver-11111147Ag64110.9052968(16) u
[110.8795149 u]
{-88.21546 MeV}
1/2-111Pd
Silver-111m111m47Ag64110.9052968(16) u
[110.8795149 u]
{-88.21546 MeV}
7/2+
Silver-11211247Ag65111.9070485(26) u
[111.8812666 u]
{-86.58376 MeV}
2(-)112Pd
Silver-11311347Ag66112.906573(18) u
[112.8807911 u]
{-87.02669 MeV}
1/2-113Pd
Silver-113m113m47Ag66112.906573(18) u
[112.8807911 u]
{-87.02669 MeV}
7/2+
Silver-11411447Ag67113.908823(5) u
[113.8830411 u]
{-84.93083 MeV}
1+114Pd
Silver-11511547Ag68114.908767(20) u
[114.8829851 u]
{-84.98299 MeV}
1/2-115Pd
252Cf
Silver-115m115m47Ag68114.908767(20) u
[114.8829851 u]
{-84.98299 MeV}
7/2+
Silver-11611647Ag69115.911387(3) u
[115.8856051 u]
{-82.54248 MeV}
(0-)116Pd
Silver-116m1116m147Ag69115.911387(3) u
[115.8856051 u]
{-82.54248 MeV}
(3+)
Silver-116m2116m247Ag69115.911387(3) u
[115.8856051 u]
{-82.54248 MeV}
(6-)
Silver-11711747Ag70116.911774(15) u
[116.8859921 u]
{-82.18199 MeV}
(1/2-)117Pd
Silver-117m117m47Ag70116.911774(15) u
[116.8859921 u]
{-82.18199 MeV}
(7/2+)
Silver-11811847Ag71117.9145955(27) u
[117.8888136 u]
{-79.55378 MeV}
1(-)118Pd
Silver-118m118m47Ag71117.9145955(27) u
[117.8888136 u]
{-79.55378 MeV}
4(+)
Silver-11911947Ag72118.915570(16) u
[118.8897881 u]
{-78.64604 MeV}
(7/2+)119Pd
Silver-119m119m47Ag72118.915570(16) u
[118.8897881 u]
{-78.64604 MeV}
(1/2-)
Silver-12012047Ag73119.918785(5) u
[119.8930031 u]
{-75.65129 MeV}
3(+)120Pd
Silver-120m120m47Ag73119.918785(5) u
[119.8930031 u]
{-75.65129 MeV}
6(-)
Silver-12112147Ag74120.920125(13) u
[120.8943431 u]
{-74.40308 MeV}
(7/2+)
Silver-12212247Ag75121.92366(4) u
[121.8978781 u]
{-71.11025 MeV}
(3+)
Silver-122m1122m147Ag75121.92366(4) u
[121.8978781 u]
{-71.11025 MeV}
(1-)
Silver-122m2122m247Ag75121.92366(4) u
[121.8978781 u]
{-71.11025 MeV}
(9-)
Silver-12312347Ag76122.92534(3) u
[122.8995581 u]
{-69.54534 MeV}
(7/2+)
Silver-12412447Ag77123.92893(27) u
[123.9031481 u]
{-66.20128 MeV}
(3+)
Silver-12512547Ag78124.93073(46) u
[124.9049481 u]
{-64.52459 MeV}
(9/2+)
Silver-125m125m47Ag78124.93073(46) u
[124.9049481 u]
{-64.52459 MeV}
(17/2-)
Silver-12612647Ag79125.93486(21) u
[125.9090781 u]
{-60.67752 MeV}
(3+)
Silver-12712747Ag80126.93726(21) u
[126.9114781 u]
{-58.44193 MeV}
Silver-12812847Ag81127.94136(32) u
[127.9155781 u]
{-54.62281 MeV}
Silver-12912947Ag82128.94420(43) u
[128.9184181 u]
{-51.97737 MeV}
(9/2+)
Silver-129m129m47Ag82128.94420(43) u
[128.9184181 u]
{-51.97737 MeV}
(1/2-)
Silver-13013047Ag83129.95094(54) u
[129.9251581 u]
{-45.6991 MeV}
Silver-13113147Ag84130.95665(54) u
[130.9308681 u]
{-40.38026 MeV}
Silver-13213247Ag85131.96372(54) u
[131.9379381 u]
{-33.7946 MeV}

 

Radioactive Decay Properties

IsotopeRadioactive DecayExtern
Half-lifeDecay ModeProbabilityEnergy
789101112
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 %

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



Ag-951.75(12) sEC/β+95Pd
EC, p → 94Rh
100 %
?
10.37(30) MeV
AL
Ag-95m1500 msIso → 95Ag100 %
Ag-95m216 msIso → 95Ag100 %
Ag-95m340 msIso → 95Ag100 %
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 %

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 %
Ag-1002.01(9) minEC/β+100Pd100 %7.075(18) MeVAL
Ag-100m2.24(13) minEC/β+100Pd
Iso → 100Ag
?
?

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

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

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) %

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 %
Ag-107stableAL
Ag-107m44.3(2) sIso → 107Ag100 %
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) %

Ag-109stableAL
Ag-109m39.79(21) sIso → 109Ag100 %
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) ns
Ag-110m2249.83(4) dIso → 110Ag
β-110Cd
1.33(8) %
98.67(8) %

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

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) %

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) %

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

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

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

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

Ag-1192.1(1) sβ-119Cd100 %5.33(40) MeVAL
Ag-119m6.0(5) sβ-119Cd100 %AL
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 %

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
?
?
?


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

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 %
Ag-12652(10) msβ-126Cd
β-, n → 125Cd
100 %
?
11.58(29) MeV
4.60(20) MeV
AL
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 %
?

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 - name of the nuclide, isotope.
2 - E: isotope symbol with mass number (superscript; number of nucleons) and Atomic number (subscript; number of protons).
3 - N: number of neutrons.
4 - 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.
5 - nuclear spin I, unit: h/2π.
6 - 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.

7 - isotope notation in short form.
8 - decay: half-live of the Silver isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
9 - decay mode: 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.
10 - decay probability in percent (%).
11 - decay energy; Particle energy related to decay type.
12 - 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
{Quadrupole moment}
Resonant
frequency
v0 bei 1 T
Relative
sensitivity
H0 = const.
v0 = const. 3)
107Ag
51,839(8) %
1/2-
- 0,11352(5)1,0878
{}
1,73310,00007
0,0407
109Ag
48,161(8) %
1/2-
0,13051(5)1,2519
{}
1,99240,00010
0,0468

1) Quantity Percentage of natural occurrence.

2) Gyromagnetic ratio: 107 rad T-1 s-1
    Quadrupole moment: Q [barn] = [100 fm2]

3) 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.

 


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Last update: 2022-12-12


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