Arsenic-80

Properties and data of the isotope ⁸⁰As.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Arsenic-80; As-80Symbol:⁸⁰As or 8033AsMass number A:80 (= number of nucleons)Atomic number Z:33 (= number of protons)Neutrons N:47Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.4242424242424 (= neutron-proton ratio)Neutron excess (N-Z):14Isotopic mass:79.922475(4) u (atomic weight of Arsenic-80)Nuclide mass:79.9043725 u (calculated nuclear mass without electrons)Mass excess:-72.21407 MeVMass defect:0.743002108 u (per nucleus)Nuclear binding energy:692.10200559 MeV (per nucleus)
8.65127507 MeV (average binding energy per nucleon)Separation energy:S_N = 6.650(6) MeV (first neutron)
S_P = 9.98(4) MeV (first proton)Half-life:15.2(2) sDecay constant λ:0.045601788194733 s^-1Specific activity α:3.476207493337 × 10⁺²⁰ Bq g^-1
9395155387.3995 Ci g^-1Spin and parity:
(nuclear angular momentum)1+Year of discovery:1954

Radioactive Decay

Half-life T_½ = 15.2(2) s respectively 1.52 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁸⁰Se	100 %	5.545(3) MeV

Parent Nuclides

Direct parent isotope is: ⁸⁰Ge.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 47) and isobaric (same nucleon number A = 80) with Arsenic-80. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 47	Isobar A = 80
26	⁷³Fe
27	⁷⁴Co
28	⁷⁵Ni	⁸⁰Ni
29	⁷⁶Cu	⁸⁰Cu
30	⁷⁷Zn	⁸⁰Zn
31	⁷⁸Ga	⁸⁰Ga
32	⁷⁹Ge	⁸⁰Ge
33	⁸⁰As	⁸⁰As
34	⁸¹Se	⁸⁰Se
35	⁸²Br	⁸⁰Br
36	⁸³Kr	⁸⁰Kr
37	⁸⁴Rb	⁸⁰Rb
38	⁸⁵Sr	⁸⁰Sr
39	⁸⁶Y	⁸⁰Y
40	⁸⁷Zr	⁸⁰Zr
41	⁸⁸Nb
42	⁸⁹Mo
43	⁹⁰Tc
44	⁹¹Ru
45	⁹²Rh
46	⁹³Pd
47	⁹⁴Ag
48	⁹⁵Cd
49	⁹⁶In