Manganese-54
Properties and data of the isotope 54Mn.
See also: list of Manganese isotopes.
General data
Name of the isotope:Manganese-54; Mn-54Symbol:54Mn or 5425MnMass number A:54 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:29Isotopic mass:53.9403564(11) u (atomic weight of Manganese-54)Nuclide mass:53.9266422 u (calculated nuclear mass without electrons)Mass excess:-55.55766 MeVMass defect:0.506551964 u (per nucleus)Nuclear binding energy:471.85011515 MeV (per nucleus)
8.7379651 MeV (average binding energy per nucleon)Separation energy:SN = 8.9388(11) MeV (first neutron)
SP = 7.5596(10) MeV (first proton)Half-life:312.2(2) dDecay constant λ:2.569678671376 × 10-8 s-1Specific activity α:2.919805079962 × 10+14 Bq g-1
7891.3650809803 Ci g-1Spin and parity:
(nuclear angular momentum)3+Magnetic dipole moment:μ(μN) = 3.297(3)Quadrupole moment Q:0.37(3) barn (100 fm2)Nuclear g-factor:gl = 1.099Charge radius:3.6834(49) femtometer fmMirror nucleus:Copper-54Year of discovery:1938
Radioactive Decay
Half-life T½ = 312.2(2) d respectively 2.6974080 × 107 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EE β+ | 54Cr | 99.99 % | 1.3771(11) MeV | |
β- | 54Fe | 0.000093 % | 0.6969(11) MeV | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 29) and isobaric (same nucleon number A = 54) with Manganese-54. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 29 | Isobar A = 54 |
13 | 42Al | |
14 | 43Si | |
15 | 44P | |
16 | 45S | |
17 | 46Cl | |
18 | 47Ar | |
19 | 48K | 54K |
20 | 49Ca | 54Ca |
21 | 50Sc | 54Sc |
22 | 51Ti | 54Ti |
23 | 52V | 54V |
24 | 53Cr | 54Cr |
25 | 54Mn | 54Mn |
26 | 55Fe | 54Fe |
27 | 56Co | 54Co |
28 | 57Ni | 54Ni |
29 | 58Cu | 54Cu |
30 | 59Zn | 54Zn |
31 | 60Ga | |
32 | 61Ge | |
33 | 62As | |
34 | 63Se | |
External data and identifiers
Last update: 2023-10-04
Perma link: https://www.chemlin.org/isotope/manganese-54
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