Titanium-50

Properties and data of the isotope ⁵⁰Ti.

Contents

Titanium-50 is a radioisotope of the chemical element titanium, comprising 5.18% of natural titanium deposits, which has 28 neutrons in its atomic nucleus in addition to the element-specific 22 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 50.

The discovery and mass determination of titanium-47 during the investigation of Titanium tetrafluoride with a spectrograph was reported in 1935 [1].

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

General data

Name of the isotope:Titanium-50; Ti-50Symbol:⁵⁰Ti or 5022TiMass number A:50 (= number of nucleons)Atomic number Z:22 (= number of protons)Neutrons N:28Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.2727272727273 (= neutron-proton ratio)Neutron excess (N-Z):6Isotopic mass:49.94478562(9) u (atomic weight of Titanium-50)Nuclide mass:49.9327171 u (calculated nuclear mass without electrons)Mass excess:-51.43186 MeVMass defect:0.46998273200001 u (per nucleus)Nuclear binding energy:437.78609496 MeV (per nucleus)
8.7557219 MeV (average binding energy per nucleon)Separation energy:S_N = 10.39317(3) MeV (first neutron)
S_P = 12.1584(23) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:3.5704(22) femtometer fmMirror nucleus:Nickel-50Year of discovery:1934

Parent Nuclides

Direct parent isotopes are: ⁵⁰V, ⁵⁰Sc, ⁵⁰Cr.

Occurrence

Comparison of the natural Titanium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Titanium Isotopic mixture	47.867 u	100 %
Isotope ⁴⁷Ti	46.95175749(9) u	7.44(2) %	stable	5/2-
Isotope ⁴⁶Ti	45.95262636(10) u	8.25(3) %	stable	0+
Isotope ⁴⁸Ti	47.94794068(8) u	73.72(3) %	stable	0+
Isotope ⁴⁹Ti	48.94786439(8) u	5.41(2) %	stable	7/2-
Isotope ⁵⁰Ti	49.94478562(9) u	5.18(2) %	stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 28) and isobaric (same nucleon number A = 50) with Titanium-50. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 28	Isobar A = 50
11	³⁹Na
12	⁴⁰Mg
13	⁴¹Al
14	⁴²Si
15	⁴³P
16	⁴⁴S
17	⁴⁵Cl	⁵⁰Cl
18	⁴⁶Ar	⁵⁰Ar
19	⁴⁷K	⁵⁰K
20	⁴⁸Ca	⁵⁰Ca
21	⁴⁹Sc	⁵⁰Sc
22	⁵⁰Ti	⁵⁰Ti
23	⁵¹V	⁵⁰V
24	⁵²Cr	⁵⁰Cr
25	⁵³Mn	⁵⁰Mn
26	⁵⁴Fe	⁵⁰Fe
27	⁵⁵Co	⁵⁰Co
28	⁵⁶Ni	⁵⁰Ni
29	⁵⁷Cu
30	⁵⁸Zn
31	⁵⁹Ga
32	⁶⁰Ge