Titanium isotopes

Main isotopes of titanium

iso NA half-life DM DE (MeV) DP 44Ti syn 63 y ε – 44Sc γ 0.07D, 0.08D – 46Ti 8.25% is stable with 24 neutrons 47Ti 7.44% is stable with 25 neutrons 48Ti 73.72% is stable with 26 neutrons 49Ti 5.41% is stable with 27 neutrons 50Ti 5.18% is stable with 28 neutrons
Standard atomic weight (Ar)	47.867(1)

Naturally occurring titanium (₂₂Ti) is composed of 5 stable isotopes; ⁴⁶Ti, ⁴⁷Ti, ⁴⁸Ti, ⁴⁹Ti and ⁵⁰Ti with ⁴⁸Ti being the most abundant (73.8% natural abundance). Twenty-one radioisotopes have been characterized, with the most stable being ⁴⁴Ti with a half-life of 60 years, ⁴⁵Ti with a half-life of 184.8 minutes, ⁵¹Ti with a half-life of 5.76 minutes, and ⁵²Ti with a half-life of 1.7 minutes. All of the remaining radioactive isotopes have half-lives that are less than 33 seconds and the majority of these have half-lives that are less than half a second. The least stable is ⁶¹Ti with a half-life somewhat longer than 300 nanoseconds.

The isotopes of titanium range in atomic mass from 38.01 u (³⁸Ti) to 62.99 u (⁶³Ti). The primary decay mode before the most abundant stable isotope, ⁴⁸Ti, is β⁺ and the primary mode after is β⁻. The primary decay products before ⁴⁸Ti are scandium isotopes and the primary products after are vanadium isotopes.

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