Periodic Table/Neptunium/²³³Np

← 232Np234Np →

²³³Np

Neptunium-233

Radioactive· Half-life: 36.2 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

93

Neutrons (N)

140

Mass Number (A)

233

Atomic Mass

233.040739AMU

Spin / Parity

5/2+

Binding E/A

7.392keV

Natural Abundance

Trace / None

Half-life

36.2 min

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

β⁺

100.0%

α

0.0%

Decay Chain

²³³NpNeptunium36.2 min

β⁺100.0%

α²²⁹Pa0.00%

²³³UUranium159 ky

α100.0%

24Ne²⁰⁹Pb7.20%

28Mg²⁰⁵Hg1.30%

²²⁹ThThorium7.92 ky

α100.0%

²²⁵RaRadium14.8 d

β⁻100.0%

²²⁵AcActinium9.92 d

α100.0%

¹⁴C²¹¹Bi5.30%

²²¹FrFrancium4.80 min

α100.0%

¹⁴C²⁰⁷Tl8.80%

β⁻²²¹Ra0.00%

²¹⁷AtAstatine32.6 ms

α100.0%

β⁻²¹⁷Rn0.01%

²¹³BiBismuth45.6 min

β⁻97.9%

α²⁰⁹Tl2.09%

²¹³PoPolonium3.71 μs

α100.0%

²⁰⁹PbLead3.23 h

β⁻100.0%

²⁰⁹BiBismuth20100000000 Gy

α100.0%

²⁰⁵TlThalliumSTABLE

12-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