Manganese-42

Properties and data of the isotope ⁴²Mn.

Contents

General data

Name of the isotope:Manganese-42; Mn-42Symbol:⁴²Mn or 4225MnMass number A:42 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:17Isotopic mass:42.0 u (atomic weight of Manganese-42)Nuclide mass:41.9862858 u (calculated nuclear mass without electrons)Mass excess:0 MeVMass defect:0.342929372 u (per nucleus)Nuclear binding energy:319.43665244 MeV (per nucleus)
7.60563458 MeV (average binding energy per nucleon)Half-life:Spin and parity:
(nuclear angular momentum)Mirror nucleus:Chlorine-42

Radioactive Decay

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
p	⁴¹Cr

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 17) and isobaric (same nucleon number A = 42) with Manganese-42. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 17	Isobar A = 42
7	²⁴N
8	²⁵O
9	²⁶F
10	²⁷Ne
11	²⁸Na
12	²⁹Mg
13	³⁰Al	⁴²Al
14	³¹Si	⁴²Si
15	³²P	⁴²P
16	³³S	⁴²S
17	³⁴Cl	⁴²Cl
18	³⁵Ar	⁴²Ar
19	³⁶K	⁴²K
20	³⁷Ca	⁴²Ca
21	³⁸Sc	⁴²Sc
22	³⁹Ti	⁴²Ti
23	⁴⁰V	⁴²V
24	⁴¹Cr	⁴²Cr
25	⁴²Mn	⁴²Mn