Manganese-70

Properties and data of the isotope ⁷⁰Mn.

Contents

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

General data

Name of the isotope:Manganese-70; Mn-70Symbol:⁷⁰Mn or 7025MnMass number A:70 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:45Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.8 (= neutron-proton ratio)Neutron excess (N-Z):20Isotopic mass:69.97907(54) u (atomic weight of Manganese-70)Nuclide mass:69.9653558 u (calculated nuclear mass without electrons)Mass excess:-19.49617 MeVMass defect:0.60647702000001 u (per nucleus)Nuclear binding energy:564.92970527 MeV (per nucleus)
8.07042436 MeV (average binding energy per nucleon)Separation energy:S_N = 2.80(64) MeV (first neutron)
S_P = 18.21(71) MeV (first proton)Half-life:19.9(17) msDecay constant λ:34.831516611053 s^-1Specific activity α:3.040004339086 × 10⁺²³ Bq g^-1
8216227943477.6 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:2009

Radioactive Decay

Half-life T_½ = 19.9(17) ms respectively 1.99 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁷⁰Fe		17.01(64) MeV
β^-, n	⁶⁹Fe	50(20) %	11.46(64) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 45) and isobaric (same nucleon number A = 70) with Manganese-70. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 45	Isobar A = 70
23	⁶⁸V
25	⁷⁰Mn	⁷⁰Mn
26	⁷¹Fe	⁷⁰Fe
27	⁷²Co	⁷⁰Co
28	⁷³Ni	⁷⁰Ni
29	⁷⁴Cu	⁷⁰Cu
30	⁷⁵Zn	⁷⁰Zn
31	⁷⁶Ga	⁷⁰Ga
32	⁷⁷Ge	⁷⁰Ge
33	⁷⁸As	⁷⁰As
34	⁷⁹Se	⁷⁰Se
35	⁸⁰Br	⁷⁰Br
36	⁸¹Kr	⁷⁰Kr
37	⁸²Rb
38	⁸³Sr
39	⁸⁴Y
40	⁸⁵Zr
41	⁸⁶Nb
42	⁸⁷Mo
43	⁸⁸Tc
44	⁸⁹Ru
45	⁹⁰Rh
46	⁹¹Pd
47	⁹²Ag