Periodic Table/Neptunium/²²³Np

← 222Np224Np →

²²³Np

Neptunium-223

Radioactive· Half-life: 2.50 μs

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

93

Neutrons (N)

130

Mass Number (A)

223

Atomic Mass

223.032913AMU

Spin / Parity

9/2-

Binding E/A

7.394keV

Natural Abundance

Trace / None

Half-life

2.50 μs

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

α

100.0%

Decay Chain

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

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

Other Isotopes of Neptunium

219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245

← Back to NeptuniumData: IAEA NDS · ENSDF