Periodic Table/Curium/²³¹Cm

232Cm →

²³¹Cm

Curium-231

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

96

Neutrons (N)

135

Mass Number (A)

231

Atomic Mass

231.050746AMU

Spin / Parity

3/2+

Binding E/A

7.329keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁺

α

Decay Chain

²³¹CmCurium?

β⁺

α²²⁷Pu

²³¹AmAmericium?

β⁺

α²²⁷Np

²³¹PuPlutonium8.60 min

α13.0%

β⁺²³¹Np

²²⁷UUranium1.10 min

α100.0%

β⁺²²⁷Pa

²²³ThThorium600 ms

α100.0%

²¹⁹RaRadium9.00 ms

α100.0%

²¹⁵RnRadon2.30 μs

α100.0%

²¹¹PoPolonium516 ms

α100.0%

²⁰⁷PbLeadSTABLE

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

Other Isotopes of Curium

231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252

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