Periodic Table/Californium/²³⁹Cf

← 238Cf240Cf →

²³⁹Cf

Californium-239

Radioactive· Half-life: 28.0 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

98

Neutrons (N)

141

Mass Number (A)

239

Atomic Mass

239.062482AMU

Spin / Parity

5/2+

Binding E/A

7.298keV

Natural Abundance

Trace / None

Half-life

28.0 s

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

α

65.0%

β⁺

Decay Chain

²³⁹CfCalifornium28.0 s

α65.0%

β⁺²³⁹Bk

²³⁵CmCurium7.00 min

α4.00%

β⁺²³⁵Am

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 Californium

237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256

← Back to CaliforniumData: IAEA NDS · ENSDF