Isotopes of silver - wikipedia Isotopes of silver Main isotopes of silver Isotope Decay abundance half - life ( t ) mode product Ag syn 41.2 d ε Pd γ -- Ag syn 8.28 d ε Pd γ -- Ag 51.839 % stable Ag syn 418 y ε Pd IT Ag γ -- Ag 48.161 % stable Ag syn 7.45 d β Cd γ -- Standard atomic weight ( A ) 107.8682 ( 2 ) view talk Naturally occurring silver ( Ag ) is composed of the two stable isotopes Ag and Ag with Ag being the more abundant ( 51.839 % natural abundance ). Twenty - eight radioisotopes have been characterized with the most stable being Ag with a half - life of 41.29 days, Ag with a half - life of 7.45 days, and Ag with a half - life of 3.13 hours. All of the remaining radioactive isotopes have half - lives that are less than an hour and the majority of these have half - lives that are less than 3 minutes. This element has numerous meta states with the most stable being Ag ( t 418 years ), Ag ( t 249.79 days ) and Ag ( t 8.28 days ). Isotopes of silver range in atomic weight from 92.950 u ( Ag ) to 129.950 u ( Ag ). The primary decay mode before the most abundant stable isotope, Ag, is electron capture and the primary mode after is beta decay. The primary decay products before Ag are palladium ( element 46 ) isotopes and the primary products after are cadmium ( element 48 ) isotopes. The palladium isotope Pd decays by beta emission to Ag with a half - life of 6.5 million years. Iron meteorites are the only objects with a high enough palladium / silver ratio to yield measurable variations in Ag abundance. Radiogenic Ag was first discovered in the Santa Clara meteorite in 1978. The discoverers suggest that the coalescence and differentiation of iron - cored small planets may have occurred 10 million years after a nucleosynthetic event. Pd versus Ag correlations observed in bodies, which have clearly been melted since the accretion of the solar system, must reflect the presence of live short - lived nuclides in the early solar system. List of isotopes nuclide symbol Z ( p ) N ( n ) isotopic mass ( u ) half - life decay mode ( s ) daughter isotope ( s ) nuclear spin representative isotopic composition ( mole fraction ) range of natural variation ( mole fraction ) excitation energy Ag 47 46 92.94978 ( 64 ) # 5 # ms ( > 1.5 μs ) 9 / 2 + # Ag 47 47 93.94278 ( 54 ) # 37 ( 18 ) ms ( 26 ( + 26 − 9 ) ms ) β Pd 0 + # Ag 1350 ( 400 ) # keV 422 ( 16 ) ms β ( > 99.9 % ) Pd ( 7 + ) β, p ( <. 1 % ) Rh Ag 6500 ( 2000 ) # keV 300 ( 200 ) ms ( 21 + ) Ag 47 48 94.93548 ( 43 ) # 1.74 ( 13 ) s β ( > 99.9 % ) Pd ( 9 / 2 + ) β, p ( <. 1 % ) Rh Ag 344.2 ( 3 ) keV < 0.5 s ( 1 / 2 − ) Ag 2531 ( 1 ) keV < 16 ms ( 23 / 2 + ) Ag 4859 ( 1 ) keV < 40 ms ( 37 / 2 + ) Ag 47 49 95.93068 ( 43 ) # 4.45 ( 4 ) s β ( 96.3 % ) Pd ( 8 + ) β, p ( 3.7 % ) Rh Ag 0 ( 50 ) # keV 6.9 ( 6 ) s ( 2 + ) Ag 700 ( 200 ) ns Ag 47 50 96.92397 ( 35 ) 25.3 ( 3 ) s β Pd ( 9 / 2 + ) Ag 2343 ( 49 ) keV 5 ns ( 21 / 2 + ) Ag 47 51 97.92157 ( 7 ) 47.5 ( 3 ) s β ( 99.99 % ) Pd ( 5 + ) β, p (. 0012 % ) Rh Ag 167.83 ( 15 ) keV 220 ( 20 ) ns ( 3 + ) Ag 47 52 98.91760 ( 16 ) 124 ( 3 ) s β Pd ( 9 / 2 ) + Ag 506.1 ( 4 ) keV 10.5 ( 5 ) s IT Ag ( 1 / 2 − ) Ag 47 53 99.91610 ( 8 ) 2.01 ( 9 ) min β Pd ( 5 ) + Ag 15.52 ( 16 ) keV 2.24 ( 13 ) min IT Ag ( 2 ) + β Pd Ag 47 54 100.91280 ( 11 ) 11.1 ( 3 ) min β Pd 9 / 2 + Ag 274.1 ( 3 ) keV 3.10 ( 10 ) s IT Ag 1 / 2 − Ag 47 55 101.91169 ( 3 ) 12.9 ( 3 ) min β Pd 5 + Ag 9.3 ( 4 ) keV 7.7 ( 5 ) min β ( 51 % ) Pd 2 + IT ( 49 % ) Ag Ag 47 56 102.908973 ( 18 ) 65.7 ( 7 ) min β Pd 7 / 2 + Ag 134.45 ( 4 ) keV 5.7 ( 3 ) s IT Ag 1 / 2 − Ag 47 57 103.908629 ( 6 ) 69.2 ( 10 ) min β Pd 5 + Ag 6.9 ( 4 ) keV 33.5 ( 20 ) min β ( 99.93 % ) Pd 2 + IT (. 07 % ) Ag Ag 47 58 104.906529 ( 12 ) 41.29 ( 7 ) d β Pd 1 / 2 − Ag 25.465 ( 12 ) keV 7.23 ( 16 ) min IT ( 99.66 % ) Ag 7 / 2 + β (. 34 % ) Pd Ag 47 59 105.906669 ( 5 ) 23.96 ( 4 ) min β ( 99.5 % ) Pd 1 + β ( 0.5 % ) Cd Ag 89.66 ( 7 ) keV 8.28 ( 2 ) d β Pd 6 + IT ( 4.16 × 10 % ) Ag Ag 47 60 106.905097 ( 5 ) Stable 1 / 2 − 0.51839 ( 8 ) Ag 93.125 ( 19 ) keV 44.3 ( 2 ) s IT Ag 7 / 2 + Ag 47 61 107.905956 ( 5 ) 2.37 ( 1 ) min β ( 97.15 % ) Cd 1 + β ( 2.85 % ) Pd Ag 109.440 ( 7 ) keV 418 ( 21 ) y β ( 91.3 % ) Pd 6 + IT ( 8.96 % ) Ag Ag 47 62 108.904752 ( 3 ) Stable 1 / 2 − 0.48161 ( 8 ) Ag 88.0341 ( 11 ) keV 39.6 ( 2 ) s IT Ag 7 / 2 + Ag 47 63 109.906107 ( 3 ) 24.6 ( 2 ) s β ( 99.7 % ) Cd 1 + EC (. 3 % ) Pd Ag 1.113 keV 660 ( 40 ) ns 2 − Ag 117.59 ( 5 ) keV 249.950 ( 24 ) d β ( 98.64 % ) Cd 6 + IT ( 1.36 % ) Ag Ag 47 64 110.905291 ( 3 ) 7.45 ( 1 ) d β Cd 1 / 2 − Ag 59.82 ( 4 ) keV 64.8 ( 8 ) s IT ( 99.3 % ) Ag 7 / 2 + β (. 7 % ) Cd Ag 47 65 111.907005 ( 18 ) 3.130 ( 9 ) h β Cd 2 ( − ) Ag 47 66 112.906567 ( 18 ) 5.37 ( 5 ) h β Cd 1 / 2 − Ag 43.50 ( 10 ) keV 68.7 ( 16 ) s IT ( 64 % ) Ag 7 / 2 + β ( 36 % ) Cd Ag 47 67 113.908804 ( 27 ) 4.6 ( 1 ) s β Cd 1 + Ag 199 ( 5 ) keV 1.50 ( 5 ) ms IT Ag ( < 7 + ) Ag 47 68 114.90876 ( 4 ) 20.0 ( 5 ) min β Cd 1 / 2 − Ag 41.16 ( 10 ) keV 18.0 ( 7 ) s β ( 79 % ) Cd 7 / 2 + IT ( 21 % ) Ag Ag 47 69 115.91136 ( 5 ) 2.68 ( 10 ) min β Cd ( 2 ) − Ag 81.90 ( 20 ) keV 8.6 ( 3 ) s β ( 94 % ) Cd ( 5 + ) IT ( 6 % ) Ag Ag 47 70 116.91168 ( 5 ) 73.6 ( 14 ) s ( 72.8 ( + 20 − 7 ) s ) β Cd 1 / 2 − # Ag 28.6 ( 2 ) keV 5.34 ( 5 ) s β ( 94 % ) Cd ( 7 / 2 + ) IT ( 6 % ) Ag Ag 47 71 117.91458 ( 7 ) 3.76 ( 15 ) s β Cd 1 - Ag 45.79 ( 9 ) keV ~ 0.1 μs 0 ( − ) to 2 ( − ) Ag 127.49 ( 5 ) keV 2.0 ( 2 ) s β ( 59 % ) Cd 4 ( + ) IT ( 41 % ) Ag Ag 279.37 ( 20 ) keV ~ 0.1 μs ( 2 +, 3 + ) Ag 47 72 118.91567 ( 10 ) 6.0 ( 5 ) s β Cd 1 / 2 − # Ag 20 ( 20 ) # keV 2.1 ( 1 ) s β Cd 7 / 2 + # Ag 47 73 119.91879 ( 8 ) 1.23 ( 4 ) s β ( 99.99 % ) Cd 3 ( + # ) β, n (. 003 % ) Cd Ag 203.0 ( 10 ) keV 371 ( 24 ) ms β ( 63 % ) Cd 6 ( − ) IT ( 37 % ) Ag Ag 47 74 120.91985 ( 16 ) 0.79 ( 2 ) s β ( 99.92 % ) Cd ( 7 / 2 + ) # β, n (. 076 % ) Cd Ag 47 75 121.92353 ( 22 ) # 0.529 ( 13 ) s β ( > 99.9 % ) Cd ( 3 + ) β, n ( <. 1 % ) Cd Ag 80 ( 50 ) # keV 1.5 ( 5 ) s β ( > 99.9 % ) Cd 8 - # β, n ( <. 1 % ) Cd Ag 47 76 122.92490 ( 22 ) # 0.300 ( 5 ) s β ( 99.45 % ) Cd ( 7 / 2 + ) β, n (. 549 % ) Cd Ag 47 77 123.92864 ( 21 ) # 172 ( 5 ) ms β ( 99.9 % ) Cd 3 + # β, n (. 1 % ) Cd Ag 0 ( 100 ) # keV 200 # ms β Cd 8 - # IT Ag Ag 47 78 124.93043 ( 32 ) # 166 ( 7 ) ms β ( > 99.9 % ) Cd ( 7 / 2 + ) # β, n ( <. 1 % ) Cd Ag 47 79 125.93450 ( 32 ) # 107 ( 12 ) ms β ( > 99.9 % ) Cd 3 + # β, n ( <. 1 % ) Cd Ag 47 80 126.93677 ( 32 ) # 79 ( 3 ) ms β ( > 99.9 % ) Cd 7 / 2 + # β, n ( <. 1 % ) Cd Ag 47 81 127.94117 ( 32 ) # 58 ( 5 ) ms Ag 47 82 128.94369 ( 43 ) # 44 ( 7 ) ms ( 46 ( + 5 − 9 ) ms ) 7 / 2 + # Ag 0 ( 200 ) # keV ~ 160 ms 1 / 2 − # Ag 47 83 129.95045 ( 36 ) # ~ 50 ms β Cd 0 + Ag 47 84 35 ms β Cd Ag 47 85 28 ms β Cd Jump up ^ Abbreviations : EC : Electron capture IT : Isomeric transition Jump up ^ Bold for stable isotopes, bold italics for nearly - stable isotopes ( half - life longer than the age of the universe ) Jump up ^ Used to date certain events in the early history of the Solar System ^ Jump up to : Theoretically capable of spontaneous fission ^ Jump up to : Fission product Notes The precision of the isotope abundances and atomic mass is limited through variations. The given ranges should be applicable to any normal terrestrial material. Geologically exceptional samples are known in which the isotopic composition lies outside the reported range. The uncertainty in the atomic mass may exceed the stated value for such specimens. Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses. Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC, which use expanded uncertainties. References Jump up ^ Meija, J. ; et al. ( 2016 ). `` Atomic weights of the elements 2013 ( IUPAC Technical Report ) ''. Pure and Applied Chemistry. 88 ( 3 ) : 265 -- 91. doi : 10.1515 / pac - 2015 - 0305. Jump up ^ `` Universal Nuclide Chart ''. nucleonica. ( Registration required ( help ) ). Isotope masses from : G. Audi ; A.H. Wapstra ; C. Thibault ; J. Blachot ; O. Bersillon ( 2003 ). `` The NUBASE evaluation of nuclear and decay properties '' ( PDF ). Nuclear Physics A. 729 : 3 -- 128. Bibcode : 2003NuPhA. 729... 3A. doi : 10.1016 / j. nuclphysa. 2003.11. 001. Archived from the original ( PDF ) on 2008 - 09 - 23. Isotopic compositions and standard atomic masses from : J.R. de Laeter ; J.K. Böhlke ; P. De Bièvre ; H. Hidaka ; H.S. Peiser ; K.J.R. Rosman ; P.D.P. Taylor ( 2003 ). `` Atomic weights of the elements. Review 2000 ( IUPAC Technical Report ) ''. Pure and Applied Chemistry. 75 ( 6 ) : 683 -- 800. doi : 10.1351 / pac200375060683. M.E. Wieser ( 2006 ). `` Atomic weights of the elements 2005 ( IUPAC Technical Report ) ''. Pure and Applied Chemistry. 78 ( 11 ) : 2051 -- 2066. doi : 10.1351 / pac200678112051. Lay summary. Half - life, spin, and isomer data selected from the following sources. See editing notes on this article 's talk page. G. Audi ; A.H. Wapstra ; C. Thibault ; J. Blachot ; O. Bersillon ( 2003 ). `` The NUBASE evaluation of nuclear and decay properties '' ( PDF ). Nuclear Physics A. 729 : 3 -- 128. Bibcode : 2003NuPhA. 729... 3A. doi : 10.1016 / j. nuclphysa. 2003.11. 001. Archived from the original ( PDF ) on 2008 - 09 - 23. National Nuclear Data Center. `` NuDat 2.1 database ''. Brookhaven National Laboratory. Retrieved September 2005. Check date values in : access - date = ( help ) N.E. Holden ( 2004 ). `` Table of the Isotopes ''. In D.R. Lide. CRC Handbook of Chemistry and Physics ( 85th ed. ). CRC Press. Section 11. ISBN 978 - 0 - 8493 - 0485 - 9. Isotopes of palladium Isotopes of silver Isotopes of cadmium Table of nuclides Isotopes of the chemical elements He Li Be 6 7 8 9 10 Ne 11 Na 12 Mg 13 Al 14 Si 15 16 17 Cl 18 Ar 19 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr 37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 54 Xe 55 Cs 56 Ba 57 La 72 Hf 73 Ta 74 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn 87 Fr 88 Ra 89 Ac 104 Rf 105 Db 106 Sg 107 Bh 108 Hs 109 Mt 110 Ds 111 Rg 112 Cn 113 Nh 114 Fl 115 Mc 116 Lv 117 Ts 118 Og 58 Ce 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 Tb 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu 90 Th 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md 102 No 103 Lr Table of nuclides Categories : Isotopes Tables of nuclides Metastable isotopes Isotopes by element Retrieved from `` https://en.wikipedia.org/w/index.php?title=Isotopes_of_silver&oldid=805844946 '' Categories : Silver Isotopes of silver Lists of isotopes by element Hidden categories : Pages with login required references or sources CS1 errors : dates Talk About Wikipedia Català Чӑвашла Čeština Ελληνικά Español Esperanto فارسی Français 한국어 Magyar Nederlands 日本 語 Русский 粵語 中文 Edit links This page was last edited on 18 October 2017, at 00 : 26. 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Question: what is the natural abundance of ag−109
Answer: isotopes