Isotopes of Thorium

Notes

Thorium has no stable isotopes.

Notable Isotopes

228Th [138 neutrons]

Abundance: Synthetic

Half life: 1.9116 years [ Alpha Decay ]

Decay Energy: 5.520 MeV

Decays to 224Ra.

229Th [139 neutrons]

Abundance: Synthetic

Half life: 7340 years [ Alpha Decay ]

Decay Energy: 5.168 MeV

Decays to 225Ra.

230Th [140 neutrons]

Abundance: Synthetic

Half life: 75380 years [ Alpha Decay ]

Decay Energy: 4.770 MeV

Decays to 226Ra.

232Th [142 neutrons]

Abundance: 100%

Half life: 1.4505 x 1010years [ Alpha Decay ]

Decay Energy: 4.083 MeV

Decays to 228Ra.