Zinc-84

Properties and data of the isotope ⁸⁴Zn.

Contents

General data

Name of the isotope:Zinc-84; Zn-84Symbol:⁸⁴Zn or 8430ZnMass number A:84 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:54Isotopic mass:83.96572(43) u (atomic weight of Zinc-84)Nuclide mass:83.9492631 u (calculated nuclear mass without electrons)Mass excess:-31.93161 MeVMass defect:0.73693642399999 u (per nucleus)Nuclear binding energy:686.45185734 MeV (per nucleus)
8.17204592 MeV (average binding energy per nucleon)Separation energy:S_N = 3.71(50) MeV (first neutron)Half-life:633 nsDecay constant λ:1095019.2425908 s^-1Specific activity α:7.945012196653 × 10⁺²⁷ Bq g^-1
2.147300593690 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2010

Radioactive Decay

Half-life T_½ = 633 ns respectively 6.33 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	⁸⁴Ga	?	12.16(45) MeV
β^-, n	⁸³Ga	?	9.26(40) MeV
β^-, 2n	⁸²Ga	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 54) and isobaric (same nucleon number A = 84) with Zinc-84. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 54	Isobar A = 84
30	⁸⁴Zn	⁸⁴Zn
31	⁸⁵Ga	⁸⁴Ga
32	⁸⁶Ge	⁸⁴Ge
33	⁸⁷As	⁸⁴As
34	⁸⁸Se	⁸⁴Se
35	⁸⁹Br	⁸⁴Br
36	⁹⁰Kr	⁸⁴Kr
37	⁹¹Rb	⁸⁴Rb
38	⁹²Sr	⁸⁴Sr
39	⁹³Y	⁸⁴Y
40	⁹⁴Zr	⁸⁴Zr
41	⁹⁵Nb	⁸⁴Nb
42	⁹⁶Mo	⁸⁴Mo
43	⁹⁷Tc
44	⁹⁸Ru
45	⁹⁹Rh
46	¹⁰⁰Pd
47	¹⁰¹Ag
48	¹⁰²Cd
49	¹⁰³In
50	¹⁰⁴Sn
51	¹⁰⁵Sb
52	¹⁰⁶Te