Krypton-97

Properties and data of the isotope ⁹⁷Kr.

Contents

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

General data

Name of the isotope:Krypton-97; Kr-97Symbol:⁹⁷Kr or 9736KrMass number A:97 (= number of nucleons)Atomic number Z:36 (= number of protons)Neutrons N:61Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.6944444444444 (= neutron-proton ratio)Neutron excess (N-Z):25Isotopic mass:96.94909(14) u (atomic weight of Krypton-97)Nuclide mass:96.9293419 u (calculated nuclear mass without electrons)Mass excess:-47.42236 MeVMass defect:0.861171028 u (per nucleus)Nuclear binding energy:802.17564556 MeV (per nucleus)
8.26985202 MeV (average binding energy per nucleon)Separation energy:S_N = 2.42(13) MeV (first neutron)
S_P = 16.55(32) MeV (first proton)Half-life:63(4) msDecay constant λ:11.002336199364 s^-1Specific activity α:6.901835248015 × 10⁺²² Bq g^-1
1865360877842.1 Ci g^-1Spin and parity:
(nuclear angular momentum)(3/2+)Year of discovery:1997

Radioactive Decay

Half-life T_½ = 63(4) ms respectively 6.3 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁹⁷Rb	93.3 %	11.10(13) MeV
β^-, n	⁹⁶Rb	6.7(6) %	5.86(13) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 61) and isobaric (same nucleon number A = 97) with Krypton-97. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 61	Isobar A = 97
34	⁹⁵Se
35	⁹⁶Br	⁹⁷Br
36	⁹⁷Kr	⁹⁷Kr
37	⁹⁸Rb	⁹⁷Rb
38	⁹⁹Sr	⁹⁷Sr
39	¹⁰⁰Y	⁹⁷Y
40	¹⁰¹Zr	⁹⁷Zr
41	¹⁰²Nb	⁹⁷Nb
42	¹⁰³Mo	⁹⁷Mo
43	¹⁰⁴Tc	⁹⁷Tc
44	¹⁰⁵Ru	⁹⁷Ru
45	¹⁰⁶Rh	⁹⁷Rh
46	¹⁰⁷Pd	⁹⁷Pd
47	¹⁰⁸Ag	⁹⁷Ag
48	¹⁰⁹Cd	⁹⁷Cd
49	¹¹⁰In	⁹⁷In
50	¹¹¹Sn
51	¹¹²Sb
52	¹¹³Te
53	¹¹⁴I
54	¹¹⁵Xe
55	¹¹⁶Cs
56	¹¹⁷Ba
57	¹¹⁸La
58	¹¹⁹Ce