Manganese-53

Properties and data of the isotope ⁵³Mn.

Contents

Manganese-53 is a radioisotope of the chemical element manganese, which has 28 neutrons in its atomic nucleus in addition to the element-specific 25 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 53.

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

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:28Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.12 (= neutron-proton ratio)Neutron excess (N-Z):3Isotopic mass:52.9412875(5) u (atomic weight of Manganese-53)Nuclide mass:52.9275733 u (calculated nuclear mass without electrons)Mass excess:-54.69034 MeVMass defect:0.496955948 u (per nucleus)Nuclear binding energy:462.91148383 MeV (per nucleus)
8.73417894 MeV (average binding energy per nucleon)Separation energy:S_N = 12.0503(3) MeV (first neutron)
S_P = 6.5598(3) MeV (first proton)Half-life:3.7(4) × 10⁶ aDecay constant λ:5.936480504401 × 10^-15 s^-1Specific activity α:68750618.864953 Bq g^-1
0.0018581248341879 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Magnetic dipole moment:μ(μ_N) = +5.033(5)Quadrupole moment Q:+17(3) barn (100 fm²)Nuclear g-factor:g_l = 1.438Charge radius:3.6662(76) femtometer fmMirror nucleus:Nickel-53Year of discovery:1955 [1]

Radioactive Decay

Half-life T_½ = 3.7(4) × 10⁶ a respectively 1.16760626105990 × 10¹⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC	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.

Z	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