Periodic Table/Thorium/²¹⁵Th

← 214Th216Th →

²¹⁵Th

Thorium-215

Radioactive· Half-life: 1.35 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

90

Neutrons (N)

125

Mass Number (A)

215

Atomic Mass

215.011725AMU

Spin / Parity

1/2-

Binding E/A

7.479keV

Natural Abundance

Trace / None

Half-life

1.35 s

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

α

100.0%

Decay Chain

²¹⁵ThThorium1.35 s

α100.0%

²¹¹RaRadium12.6 s

α100.0%

β⁺²¹¹Fr

²⁰⁷RnRadon9.25 min

β⁺79.0%

α²⁰³Po21.0%

²⁰⁷AtAstatine1.81 h

β⁺90.0%

α²⁰³Bi10.0%

²⁰⁷PoPolonium5.80 h

β⁺100.0%

α²⁰³Pb0.02%

²⁰⁷BiBismuth31.2 y

β⁺100.0%

²⁰⁷PbLeadSTABLE

7-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