Periodic Table/Actinium/²⁰⁷Ac

← 206Ac208Ac →

²⁰⁷Ac

Actinium-207

Radioactive· Half-life: 31.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

89

Neutrons (N)

118

Mass Number (A)

207

Atomic Mass

207.011966AMU

Spin / Parity

9/2-

Binding E/A

7.461keV

Natural Abundance

Trace / None

Half-life

31.0 ms

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

α

100.0%

Decay Chain

²⁰⁷AcActinium31.0 ms

α100.0%

²⁰³FrFrancium550 ms

α100.0%

β⁺²⁰³Rn

¹⁹⁹AtAstatine7.02 s

α89.0%

β⁺¹⁹⁹Po

¹⁹⁵BiBismuth3.05 min

β⁺100.0%

α¹⁹¹Tl0.03%

¹⁹⁵PbLead15.0 min

β⁺100.0%

¹⁹⁵TlThallium1.16 h

β⁺100.0%

¹⁹⁵HgMercury10.7 h

β⁺100.0%

¹⁹⁵AuGold186 d

EC100.0%

¹⁹⁵PtPlatinumSTABLE

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