Titanium-40
Properties and data of the isotope 40Ti.
See also: list of Titanium isotopes.
General data
Name of the isotope:Titanium-40; Ti-40Symbol:40Ti or 4022TiMass number A:40 (= number of nucleons)Atomic number Z:22 (= number of protons)Neutrons N:18Isotopic mass:39.99050(17) u (atomic weight of Titanium-40)Nuclide mass:39.9784315 u (calculated nuclear mass without electrons)Mass excess:-8.84919 MeVMass defect:0.33761919200001 u (per nucleus)Nuclear binding energy:314.49025163 MeV (per nucleus)
7.86225629 MeV (average binding energy per nucleon)Separation energy:SN = 19.12(26) MeV (first neutron)
SP = 1.97(16) MeV (first proton)Half-life:52.4(3) msDecay constant λ:13.227999629007 s-1Specific activity α:2.042586591309 × 10+23 Bq g-1
5520504300836.5 Ci g-1Spin and parity:
(nuclear angular momentum)0+Mirror nucleus:Argon-40Year of discovery:1982
Radioactive Decay
Half-life T½ = 52.4(3) ms respectively 5.24 × 10-2 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EE | 40Sc | 56.99 % | 11.67(16) MeV | |
EE, p | 39Ca | 43.01 % | | |
Parent Nuclides
Direct parent isotopes are: 41V, 42Cr.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 18) and isobaric (same nucleon number A = 40) with Titanium-40. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 18 | Isobar A = 40 |
7 | 25N | |
8 | 26O | |
9 | 27F | |
10 | 28Ne | |
11 | 29Na | |
12 | 30Mg | 40Mg |
13 | 31Al | 40Al |
14 | 32Si | 40Si |
15 | 33P | 40P |
16 | 34S | 40S |
17 | 35Cl | 40Cl |
18 | 36Ar | 40Ar |
19 | 37K | 40K |
20 | 38Ca | 40Ca |
21 | 39Sc | 40Sc |
22 | 40Ti | 40Ti |
23 | 41V | 40V |
24 | 42Cr | |
25 | 43Mn | |
External data and identifiers
Last update: 2023-10-04
Perma link: https://www.chemlin.org/isotope/titanium-40
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