Periodic Table/Actinium/²¹⁰Ac

← 209Ac211Ac →

²¹⁰Ac

Actinium-210

Radioactive· Half-life: 350 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

121

Mass Number (A)

210

Atomic Mass

210.009409AMU

Spin / Parity

7+

Binding E/A

7.481keV

Natural Abundance

Trace / None

Half-life

350 ms

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

α

100.0%

β⁺

Decay Chain

²¹⁰AcActinium350 ms

α100.0%

β⁺²¹⁰Ra

²⁰⁶FrFrancium?

α88.4%

β⁺²⁰⁶Rn11.6%

²⁰²AtAstatine3.07 min

β⁺88.0%

α¹⁹⁸Bi12.0%

²⁰²PoPolonium44.6 min

β⁺98.1%

α¹⁹⁸Pb1.92%

²⁰²BiBismuth1.72 h

β⁺100.0%

α¹⁹⁸Tl1.00%

²⁰²PbLead52.5 ky

EC100.0%

²⁰²TlThallium12.3 d

EC100.0%

²⁰²HgMercurySTABLE

8-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