Periodic Table/Actinium/²⁰⁶Ac

← 205Ac207Ac →

²⁰⁶Ac

Actinium-206

Radioactive· Half-life: 25.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

117

Mass Number (A)

206

Atomic Mass

206.014476AMU

Spin / Parity

3+

Binding E/A

7.447keV

Natural Abundance

Trace / None

Half-life

25.0 ms

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

α

100.0%

β⁺

Decay Chain

²⁰⁶AcActinium25.0 ms

α100.0%

β⁺²⁰⁶Ra

²⁰²FrFrancium372 ms

α100.0%

β⁺²⁰²Rn

¹⁹⁸AtAstatine4.47 s

α97.0%

β⁺¹⁹⁸Po

¹⁹⁴BiBismuth1.58 min

β⁺100.0%

α¹⁹⁰Tl0.46%

¹⁹⁴PbLead10.7 min

β⁺100.0%

α¹⁹⁰Hg7.30%

¹⁹⁴TlThallium33.0 min

β⁺100.0%

α¹⁹⁰Au

¹⁹⁴HgMercury447 y

EC100.0%

¹⁹⁴AuGold1.58 d

β⁺100.0%

¹⁹⁴PtPlatinumSTABLE

9-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