Manganese-53

Properties and data of the isotope ⁵³Mn.

Content

General data

Name of the isotope:Manganese-53; Mn-53Symbol:⁵³Mn or 5325MnMass number A:53 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:28Isotopic mass:52.9412877(5) u (atomic weight of Manganese-53)Nuclide mass:52.9275735 u (calculated nuclear mass without electrons)Mass excess:-54.69016 MeVMass defect:0.496955748 u (per nucleus)Nuclear binding energy:462.91129753 MeV (per nucleus)
8.73417543 MeV (average binding energy per nucleon)Separation energy:S_N = 12.0541(19) MeV (first neutron)
S_P = 6.5598(3) MeV (first proton)Half-life:3.74(4) × 10⁶ aDecay constant λ:5.876885804729 × 10^-15 s^-1Specific activity α:68060450.257393 Bq g^-1
0.0018394716285782 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Magnetic dipole moment:μ(μ_N) = +5.033(5)Nuclear g-factor:g_l = 1.438Charge radius:3.6662(76) femtometer fmMirror nucleus:Nickel-53Year of discovery:1955

Radioactive Decay

Half-life T_½ = 3.74(4) × 10⁶ a respectively 1.1794464 × 10¹⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE	⁵³Cr	100 %	0.5969(6) MeV

Parent Nuclides

Direct parent isotope is: ⁵³Fe.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 28) and isobaric (same nucleon number A = 53) with Manganese-53. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 28	Isobar A = 53
11	³⁹Na
12	⁴⁰Mg
13	⁴¹Al
14	⁴²Si
15	⁴³P
16	⁴⁴S
17	⁴⁵Cl
18	⁴⁶Ar	⁵³Ar
19	⁴⁷K	⁵³K
20	⁴⁸Ca	⁵³Ca
21	⁴⁹Sc	⁵³Sc
22	⁵⁰Ti	⁵³Ti
23	⁵¹V	⁵³V
24	⁵²Cr	⁵³Cr
25	⁵³Mn	⁵³Mn
26	⁵⁴Fe	⁵³Fe
27	⁵⁵Co	⁵³Co
28	⁵⁶Ni	⁵³Ni
29	⁵⁷Cu	⁵³Cu
30	⁵⁸Zn
31	⁵⁹Ga
32	⁶⁰Ge