Manganese-67

Properties and data of the isotope ⁶⁷Mn.

Content

General data

Name of the isotope:Manganese-67; Mn-67Symbol:⁶⁷Mn or 6725MnMass number A:67 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:42Isotopic mass:66.96408(32) u (atomic weight of Manganese-67)Nuclide mass:66.9503658 u (calculated nuclear mass without electrons)Mass excess:-33.45926 MeVMass defect:0.59547227200001 u (per nucleus)Nuclear binding energy:554.67884853 MeV (per nucleus)
8.27878878 MeV (average binding energy per nucleon)Separation energy:S_N = 4.78(39) MeV (first neutron)
S_P = 16.03(50) MeV (first proton)Half-life:47(2) msDecay constant λ:14.747812352339 s^-1Specific activity α:1.345657626692 × 10⁺²³ Bq g^-1
3636912504574.3 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2-)Year of discovery:1997

Radioactive Decay

Half-life T_½ = 47(2) ms respectively 4.7 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶⁷Fe	100 %	12.15(40) MeV
β^-, n	⁶⁶Fe	?	8.54(30) MeV

Parent Nuclides

Direct parent isotope is: ⁶⁷Cr.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 42) and isobaric (same nucleon number A = 67) with Manganese-67. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 42	Isobar A = 67
23	⁶⁵V	⁶⁷V
24	⁶⁶Cr	⁶⁷Cr
25	⁶⁷Mn	⁶⁷Mn
26	⁶⁸Fe	⁶⁷Fe
27	⁶⁹Co	⁶⁷Co
28	⁷⁰Ni	⁶⁷Ni
29	⁷¹Cu	⁶⁷Cu
30	⁷²Zn	⁶⁷Zn
31	⁷³Ga	⁶⁷Ga
32	⁷⁴Ge	⁶⁷Ge
33	⁷⁵As	⁶⁷As
34	⁷⁶Se	⁶⁷Se
35	⁷⁷Br	⁶⁷Br
36	⁷⁸Kr	⁶⁷Kr
37	⁷⁹Rb
38	⁸⁰Sr
39	⁸¹Y
40	⁸²Zr
41	⁸³Nb
42	⁸⁴Mo
43	⁸⁵Tc
44	⁸⁶Ru