Periodic Table/Thorium/²²⁰Th

← 219Th221Th →

²²⁰Th

Thorium-220

Radioactive· Half-life: 10.2 μs

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

90

Neutrons (N)

130

Mass Number (A)

220

Atomic Mass

220.015770AMU

Spin / Parity

0+

Binding E/A

7.476keV

Natural Abundance

Trace / None

Half-life

10.2 μs

Decay Modesoverview · half-life · α · β⁻ · β⁺

α

100.0%

EC

Decay Chain

²²⁰ThThorium10.2 μs

α100.0%

EC²²⁰Ac

²¹⁶RaRadium172 ns

α100.0%

EC²¹⁶Fr1.00%

²¹²RnRadon23.9 min

α100.0%

²⁰⁸PoPolonium2.90 y

α100.0%

β⁺²⁰⁸Bi0.00%

²⁰⁴PbLeadSTABLE

5-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Thorium

208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239

← Back to ThoriumData: IAEA NDS · ENSDF