Periodic Table/Plutonium/²²¹Pu

222Pu →

²²¹Pu

Plutonium-221

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

94

Neutrons (N)

127

Mass Number (A)

221

Atomic Mass

221.038572AMU

Spin / Parity

9/2+

Binding E/A

7.359keV

Natural Abundance

Trace / None

Half-life

Unknown

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

α

SF

Decay Chain

²²¹PuPlutonium?

α

²¹⁷UUranium850 μs

α100.0%

β⁻²¹⁷Np

²¹³ThThorium144 ms

α100.0%

β⁺²¹³Ac

²⁰⁹RaRadium4.71 s

α100.0%

β⁺²⁰⁹Fr

²⁰⁵RnRadon2.83 min

β⁺75.4%

α²⁰¹Po24.6%

²⁰⁵AtAstatine26.9 min

β⁺90.0%

α²⁰¹Bi10.0%

²⁰⁵PoPolonium1.74 h

β⁺100.0%

α²⁰¹Pb0.04%

²⁰⁵BiBismuth14.9 d

β⁺100.0%

²⁰⁵PbLead17.0 My

EC100.0%

²⁰⁵TlThalliumSTABLE

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

Other Isotopes of Plutonium

221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247

← Back to PlutoniumData: IAEA NDS · ENSDF