Titanium-57

Properties and data of the isotope ⁵⁷Ti.

Content

General data

Name of the isotope:Titanium-57; Ti-57Symbol:⁵⁷Ti or 5722TiMass number A:57 (= number of nucleons)Atomic number Z:22 (= number of protons)Neutrons N:35Isotopic mass:56.96359(28) u (atomic weight of Titanium-57)Nuclide mass:56.9515215 u (calculated nuclear mass without electrons)Mass excess:-33.9157 MeVMass defect:0.511832764 u (per nucleus)Nuclear binding energy:476.76914867 MeV (per nucleus)
8.36437103 MeV (average binding energy per nucleon)Separation energy:S_N = 2.67(28) MeV (first neutron)
S_P = 16.35(64) MeV (first proton)Half-life:98(5) msDecay constant λ:7.072930413877 s^-1Specific activity α:7.606104150874 × 10⁺²² Bq g^-1
2055703824560.7 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2-)Year of discovery:1985

Radioactive Decay

Half-life T_½ = 98(5) ms respectively 9.8 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁵⁷V	100 %	10.50(27) MeV
β^-, n	⁵⁶V	?	4.17(31) MeV

Parent Nuclides

Direct parent isotope is: ⁵⁷Sc.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 35) and isobaric (same nucleon number A = 57) with Titanium-57. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 35	Isobar A = 57
18	⁵³Ar
19	⁵⁴K
20	⁵⁵Ca	⁵⁷Ca
21	⁵⁶Sc	⁵⁷Sc
22	⁵⁷Ti	⁵⁷Ti
23	⁵⁸V	⁵⁷V
24	⁵⁹Cr	⁵⁷Cr
25	⁶⁰Mn	⁵⁷Mn
26	⁶¹Fe	⁵⁷Fe
27	⁶²Co	⁵⁷Co
28	⁶³Ni	⁵⁷Ni
29	⁶⁴Cu	⁵⁷Cu
30	⁶⁵Zn	⁵⁷Zn
31	⁶⁶Ga
32	⁶⁷Ge
33	⁶⁸As
34	⁶⁹Se
35	⁷⁰Br
36	⁷¹Kr
37	⁷²Rb
38	⁷³Sr