Iron-74

Properties and data of the isotope ⁷⁴Fe.

Contents

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

General data

Name of the isotope:Iron-74; Fe-74Symbol:⁷⁴Fe or 7426FeMass number A:74 (= number of nucleons)Atomic number Z:26 (= number of protons)Neutrons N:48Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.8461538461538 (= neutron-proton ratio)Neutron excess (N-Z):22Isotopic mass:73.97897(64) u (atomic weight of Iron-74)Nuclide mass:73.9647073 u (calculated nuclear mass without electrons)Mass excess:-19.58932 MeVMass defect:0.6403968 u (per nucleus)Nuclear binding energy:596.52577682 MeV (per nucleus)
8.06115915 MeV (average binding energy per nucleon)Separation energy:S_N = 4.76(78) MeV (first neutron)Half-life:8.2 msDecay constant λ:84.530143970725 s^-1Specific activity α:6.973321012362 × 10⁺²³ Bq g^-1
18846813546925 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2010

Radioactive Decay

Half-life T_½ = 8.2 ms respectively 8.2 × 10^-3 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	⁷⁴Co	?	13.23(78) MeV
β^-, n	⁷³Co	?	9.76(72) MeV
β^-, 2n	⁷²Co	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 48) and isobaric (same nucleon number A = 74) with Iron-74. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 48	Isobar A = 74
26	⁷⁴Fe	⁷⁴Fe
27	⁷⁵Co	⁷⁴Co
28	⁷⁶Ni	⁷⁴Ni
29	⁷⁷Cu	⁷⁴Cu
30	⁷⁸Zn	⁷⁴Zn
31	⁷⁹Ga	⁷⁴Ga
32	⁸⁰Ge	⁷⁴Ge
33	⁸¹As	⁷⁴As
34	⁸²Se	⁷⁴Se
35	⁸³Br	⁷⁴Br
36	⁸⁴Kr	⁷⁴Kr
37	⁸⁵Rb	⁷⁴Rb
38	⁸⁶Sr	⁷⁴Sr
39	⁸⁷Y
40	⁸⁸Zr
41	⁸⁹Nb
42	⁹⁰Mo
43	⁹¹Tc
44	⁹²Ru
45	⁹³Rh
46	⁹⁴Pd
47	⁹⁵Ag
48	⁹⁶Cd
49	⁹⁷In
50	⁹⁸Sn