Periodic Table/Actinium/²¹²Ac

← 211Ac213Ac →

²¹²Ac

Actinium-212

Radioactive· Half-life: 895 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

123

Mass Number (A)

212

Atomic Mass

212.007836AMU

Spin / Parity

7+

Binding E/A

7.494keV

Natural Abundance

Trace / None

Half-life

895 ms

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

α

100.0%

β⁺

Decay Chain

²¹²AcActinium895 ms

α100.0%

β⁺²¹²Ra

²⁰⁸FrFrancium59.1 s

α89.0%

β⁺²⁰⁸Rn11.0%

²⁰⁴AtAstatine9.12 min

β⁺96.2%

α²⁰⁰Bi3.80%

²⁰⁴PoPolonium3.52 h

β⁺99.3%

α²⁰⁰Pb0.67%

²⁰⁴BiBismuth11.2 h

β⁺100.0%

²⁰⁴PbLeadSTABLE

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