Periodic Table/Actinium/²²³Ac

← 222Ac224Ac →

²²³Ac

Actinium-223

Radioactive· Half-life: 2.10 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

134

Mass Number (A)

223

Atomic Mass

223.019136AMU

Spin / Parity

5/2-

Binding E/A

7.475keV

Natural Abundance

Trace / None

Half-life

2.10 min

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

α

99.0%

EC

Decay Chain

²²³AcActinium2.10 min

α99.0%

EC²²³Ra

²¹⁹FrFrancium22.5 ms

α100.0%

²¹⁵AtAstatine37.0 μs

α100.0%

²¹¹BiBismuth2.14 min

α100.0%

β⁻²¹¹Po0.28%

²⁰⁷TlThallium4.77 min

β⁻100.0%

²⁰⁷PbLeadSTABLE

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

Other Isotopes of Actinium

205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237

← Back to ActiniumData: IAEA NDS · ENSDF