Periodic Table/Actinium/²¹⁹Ac

← 218Ac220Ac →

²¹⁹Ac

Actinium-219

Radioactive· Half-life: 9.40 μs

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

130

Mass Number (A)

219

Atomic Mass

219.012420AMU

Spin / Parity

9/2-

Binding E/A

7.493keV

Natural Abundance

Trace / None

Half-life

9.40 μs

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

α

100.0%

β⁺

Decay Chain

²¹⁹AcActinium9.40 μs

α100.0%

β⁺²¹⁹Ra

²¹⁵FrFrancium90.0 ns

α100.0%

²¹¹AtAstatine7.21 h

EC58.2%

α²⁰⁷Bi41.8%

²¹¹PoPolonium516 ms

α100.0%

²⁰⁷PbLeadSTABLE

5-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