Molybdenum-95

Properties and data of the isotope ⁹⁵Mo.

Contents

General Data

Parent Nuclides

NMR Data

Isotones und Isobares

Literature

Molybdenum-95 is a stable isotope of the chemical element molybdenum, which has 53 neutrons in its atomic nucleus in addition to the element-specific 42 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 95. Mo-95 accounts for 15.873% of natural terrestrial molybdenum deposits.

Molybdenum-95 was discovered - according to a report from 1930 [1] - during the mass spectrographic investigation of Molybdenum hexacarbonyl.

See also: List of individual Molybdenum isotopes (and general data sources).

General data

Name of the isotope:Molybdenum-95; Mo-95Symbol:⁹⁵Mo or 9542MoMass number A:95 (= number of nucleons)Atomic number Z:42 (= number of protons)Neutrons N:53Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.2619047619048 (= neutron-proton ratio)Neutron excess (N-Z):11Isotopic mass:94.90583744(13) u (atomic weight of Molybdenum-95)Nuclide mass:94.8827982 u (calculated nuclear mass without electrons)Mass excess:-87.71186 MeVMass defect:0.88205445200001 u (per nucleus)Nuclear binding energy:821.62842971 MeV (per nucleus)
8.64872031 MeV (average binding energy per nucleon)Separation energy:S_N = 7.36911(9) MeV (first neutron)
S_P = 8.6318(15) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)5/2+Magnetic dipole moment:μ(μ_N) = -0.9132(3)Charge radius:4.3628(18) femtometer fmYear of discovery:1930

Parent Nuclides

Direct parent isotopes are: ⁹⁵Tc, ⁹⁵Nb.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Molybdenum Isotopic mixture	95.95 u	100 %
Isotope ⁹²Mo	91.906808(5) u	14.649(106) %	stable	0+
Isotope ⁹⁴Mo	93.905085(3) u	9.187(33) %	stable	0+
Isotope ⁹⁶Mo	95.904676(3) u	16.673(8) %	stable	0+
Isotope ⁹⁷Mo	96.906018(3) u	9.582(15) %	stable	5/2+
Isotope ⁹⁸Mo	97.905405(3) u	24.292(80) %	stable	0+
Isotope ¹⁰⁰Mo	99.907472(7) u	9.744(65) %	7.3(4) × 10¹⁸ a	0+
Isotope ⁹⁵Mo	94.90583744(13) u	15.873(30) %	stable	5/2+

NMR data

Nuclear magnetic properties and parameters of the NMR active Nuclide ⁹⁵Mo

Isotope:⁹⁵Mo-NMRQuantity:15.873(30) %Spin:5/2+Nuclearmagnetic moment
μ/μ_N:-0.9132(3)Gyromagnetic ratio γ:-1.7514 · 10⁷ rad T^-1 s^-1
-2.78744 MHz T^-1Nuclear g-factor:g_l = -0.36528Quadrupole moment Q:-0.022(1) barn (100 fm²)Line width parameter (factor):l = 1.55 fm⁴Resonance frequency:v₀ = 2.7874 MHz at 1 TRelative Sensitivity:[related to ¹H = 1.000]:
0.00327 (H₀ = const.)
0.7638 (v₀ = const.)
0.000521 (at natural abundance)
relative receptivity as compared to ¹³C:
3.06 (at natural abundance)
19.2 (enriched)Reference compound:
(conditions)2M Sodium molybdate Na₂MoO₄ solution in deuterium oxide D₂O, with a small amount of Sodium Hydroxide NaOH added.Frequency ratio:Ξ(⁹⁵Mo) = 6.516926 % [based on the reference substance]Chemical shift range:ca. 4300 ppm [-2000 to +2300]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 53) and isobaric (same nucleon number A = 95) with Molybdenum-95. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 53	Isobar A = 95
29	⁸²Cu
30	⁸³Zn
31	⁸⁴Ga
32	⁸⁵Ge
33	⁸⁶As
34	⁸⁷Se	⁹⁵Se
35	⁸⁸Br	⁹⁵Br
36	⁸⁹Kr	⁹⁵Kr
37	⁹⁰Rb	⁹⁵Rb
38	⁹¹Sr	⁹⁵Sr
39	⁹²Y	⁹⁵Y
40	⁹³Zr	⁹⁵Zr
41	⁹⁴Nb	⁹⁵Nb
42	⁹⁵Mo	⁹⁵Mo
43	⁹⁶Tc	⁹⁵Tc
44	⁹⁷Ru	⁹⁵Ru
45	⁹⁸Rh	⁹⁵Rh
46	⁹⁹Pd	⁹⁵Pd
47	¹⁰⁰Ag	⁹⁵Ag
48	¹⁰¹Cd	⁹⁵Cd
49	¹⁰²In
50	¹⁰³Sn
51	¹⁰⁴Sb
52	¹⁰⁵Te