Periodic Table/Americium/²²⁷Am

← 226Am228Am →

²²⁷Am

Americium-227

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

95

Neutrons (N)

132

Mass Number (A)

227

Atomic Mass

227.045282AMU

Spin / Parity

9/2-

Binding E/A

7.344keV

Natural Abundance

Trace / None

Half-life

Unknown

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

α

SF

Decay Chain

²²⁷AmAmericium?

α

²²³NpNeptunium2.50 μs

α100.0%

²¹⁹PaProtactinium56.0 ns

α100.0%

β⁺²¹⁹Th

²¹⁵AcActinium171 ms

α100.0%

β⁺²¹⁵Ra0.09%

²¹¹FrFrancium3.10 min

α87.0%

β⁺²¹¹Rn13.0%

²⁰⁷AtAstatine1.81 h

β⁺90.0%

α²⁰³Bi10.0%

²⁰⁷PoPolonium5.80 h

β⁺100.0%

α²⁰³Pb0.02%

²⁰⁷BiBismuth31.2 y

β⁺100.0%

²⁰⁷PbLeadSTABLE

9-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Americium

223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249

← Back to AmericiumData: IAEA NDS · ENSDF