Yttrium-80m1

Properties and data of the isotope ^80m1Y.

Contents

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

General data

Name of the isotope:Yttrium-80m1; Y-80m1Symbol:^80m1Y or 80m139YMass number A:80 (= number of nucleons)Atomic number Z:39 (= number of protons)Neutrons N:41Isotopic mass:79.934355(7) u (atomic weight of Yttrium-80m1)
Excitation energy: 228.5(1) keVNuclide mass:79.9129613 u (calculated nuclear mass without electrons)Mass excess:-61.14792 MeVMass defect:0.726082804 u (per nucleus)Nuclear binding energy:676.34177543 MeV (per nucleus)
8.45427219 MeV (average binding energy per nucleon)Half-life:4.8(3) sDecay constant λ:0.14440566261666 s^-1Specific activity α:1.10079903955 × 10⁺²¹ Bq g^-1
29751325393.432 Ci g^-1Spin and parity:
(nuclear angular momentum)(1-)

Radioactive Decay

Half-life T_½ = 4.8(3) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁸⁰Y	81(2) %
EC/β⁺	⁸⁰Sr	19(2) %

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
⁸⁰Y		30.1(5) s	(4-)
^80m2Y	312.6(9) keV	4.7(3) μs	(2+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 41) and isobaric (same nucleon number A = 80) with Yttrium-80m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 41	Isobar A = 80
21	⁶²Sc
22	⁶³Ti
23	⁶⁴V
24	⁶⁵Cr
25	⁶⁶Mn
26	⁶⁷Fe
27	⁶⁸Co
28	⁶⁹Ni	⁸⁰Ni
29	⁷⁰Cu	⁸⁰Cu
30	⁷¹Zn	⁸⁰Zn
31	⁷²Ga	⁸⁰Ga
32	⁷³Ge	⁸⁰Ge
33	⁷⁴As	⁸⁰As
34	⁷⁵Se	⁸⁰Se
35	⁷⁶Br	⁸⁰Br
36	⁷⁷Kr	⁸⁰Kr
37	⁷⁸Rb	⁸⁰Rb
38	⁷⁹Sr	⁸⁰Sr
39	⁸⁰Y	⁸⁰Y
40	⁸¹Zr	⁸⁰Zr
41	⁸²Nb
42	⁸³Mo
44	⁸⁵Ru