Periodic Table/Neptunium/²⁴⁴Np

← 243Np245Np →

²⁴⁴Np

Neptunium-244

Radioactive· Half-life: 2.29 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

93

Neutrons (N)

151

Mass Number (A)

244

Atomic Mass

244.067891AMU

Spin / Parity

7-

Binding E/A

7.319keV

Natural Abundance

Trace / None

Half-life

2.29 min

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

β⁻

100.0%

Decay Chain

²⁴⁴NpNeptunium2.29 min

β⁻100.0%

²⁴⁴PuPlutonium81.3 My

α99.9%

2β⁻²⁴⁴Cm7.30%

²⁴⁰UUranium14.1 h

β⁻100.0%

α²³⁶Th

²⁴⁰NpNeptunium1.03 h

β⁻100.0%

²⁴⁰PuPlutonium6.56 ky

α100.0%

34Si²⁰⁶Hg1.30%

²³⁶UUranium23.4 My

α100.0%

²³²ThThorium14.0 Gy

α100.0%

26Ne²⁰⁶Hg2.78%

2β⁻²³²U

²²⁸RaRadium5.75 y

β⁻100.0%

²²⁸AcActinium6.15 h

β⁻100.0%

²²⁸ThThorium1.91 y

α100.0%

20O²⁰⁸Pb1.13%

²²⁴RaRadium3.63 d

α100.0%

¹⁴C²¹⁰Pb4.00%

²²⁰RnRadon55.6 s

α100.0%

2β⁻²²⁰Ra

²¹⁶PoPolonium144 ms

α100.0%

2β⁻²¹⁶Rn

²¹²PbLead10.6 h

β⁻100.0%

²¹²BiBismuth1.01 h

β⁻64.1%

α²⁰⁸Tl35.9%

β⁻α²⁰⁸Pb0.01%

²¹²PoPolonium294 ns

α100.0%

²⁰⁸PbLeadSTABLE

17-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