Silver-109

Properties and data of the isotope ¹⁰⁹Ag.

Content

General data

Name of the isotope:Silver-109; Ag-109Symbol:¹⁰⁹Ag or 10947AgMass number A:109 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:62Isotopic mass:108.904755(9) u (atomic weight of Silver-109)Nuclide mass:108.8789731 u (calculated nuclear mass without electrons)Mass excess:-88.72015 MeVMass defect:1.000246296 u (per nucleus)Nuclear binding energy:931.72342325 MeV (per nucleus)
8.54792131 MeV (average binding energy per nucleon)Separation energy:S_N = 9.1840(27) MeV (first neutron)
S_P = 6.4842(14) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)1/2-Magnetic dipole moment:μ(μ_N) = 0.13051(5)Charge radius:4.5638(25) femtometer fmYear of discovery:1924

Parent Nuclides

Direct parent isotopes are: ¹⁰⁹Cd, ¹⁰⁹Pd.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Silver Isotopic mixture	107.8682 u	100 %
Isotope ¹⁰⁷Ag	106.90509(2) u	51.839(8) %	stable	1/2-
Isotope ¹⁰⁹Ag	108.904755(9) u	48.161(8) %	stable	1/2-

NMR data

Nuclear magnetic properties of the NMR active Nuclide ¹⁰⁹Ag

Isotope:¹⁰⁹Ag-NMRQuantity:48.161(8) %Spin:1/2-Nuclearmagnetic moment
μ/μ_N:0.13051(5)Gyromagnetic ratio γ:1.2519 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = 0.26102Resonance frequency:v₀ = 1.9924 at 1 TRelative Sensitivity:0.00010 (H₀ = const.)
0.0468 (v₀ = const.)
[related to ¹H = 1.000]

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
^109mAg	88.03337(10) keV	39.79(21) s	7/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 62) and isobaric (same nucleon number A = 109) with Silver-109. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 62	Isobar A = 109
35	⁹⁷Br
36	⁹⁸Kr
37	⁹⁹Rb
38	¹⁰⁰Sr
39	¹⁰¹Y	¹⁰⁹Y
40	¹⁰²Zr	¹⁰⁹Zr
41	¹⁰³Nb	¹⁰⁹Nb
42	¹⁰⁴Mo	¹⁰⁹Mo
43	¹⁰⁵Tc	¹⁰⁹Tc
44	¹⁰⁶Ru	¹⁰⁹Ru
45	¹⁰⁷Rh	¹⁰⁹Rh
46	¹⁰⁸Pd	¹⁰⁹Pd
47	¹⁰⁹Ag	¹⁰⁹Ag
48	¹¹⁰Cd	¹⁰⁹Cd
49	¹¹¹In	¹⁰⁹In
50	¹¹²Sn	¹⁰⁹Sn
51	¹¹³Sb	¹⁰⁹Sb
52	¹¹⁴Te	¹⁰⁹Te
53	¹¹⁵I	¹⁰⁹I
54	¹¹⁶Xe	¹⁰⁹Xe
55	¹¹⁷Cs
56	¹¹⁸Ba
57	¹¹⁹La
58	¹²⁰Ce
59	¹²¹Pr