Periodic Table/Actinium/²¹⁶Ac

← 215Ac217Ac →

²¹⁶Ac

Actinium-216

Radioactive· Half-life: 440 μs

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

127

Mass Number (A)

216

Atomic Mass

216.008749AMU

Spin / Parity

1-

Binding E/A

7.501keV

Natural Abundance

Trace / None

Half-life

440 μs

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

α

100.0%

β⁺

Decay Chain

²¹⁶AcActinium440 μs

α100.0%

β⁺²¹⁶Ra

²¹²FrFrancium20.0 min

β⁺57.0%

α²⁰⁸At43.0%

²¹²RnRadon23.9 min

α100.0%

²⁰⁸PoPolonium2.90 y

α100.0%

β⁺²⁰⁸Bi0.00%

²⁰⁴PbLeadSTABLE

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