Periodic Table/Protactinium/²¹⁸Pa

← 217Pa219Pa →

²¹⁸Pa

Protactinium-218

Radioactive· Half-life: 108 μs

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

91

Neutrons (N)

127

Mass Number (A)

218

Atomic Mass

218.020021AMU

Spin / Parity

8-

Binding E/A

7.446keV

Natural Abundance

Trace / None

Half-life

108 μs

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

α

100.0%

Decay Chain

²¹⁸PaProtactinium108 μs

α100.0%

²¹⁴AcActinium8.20 s

α93.0%

β⁺²¹⁴Ra7.00%

²¹⁰FrFrancium3.18 min

α71.0%

β⁺²¹⁰Rn

²⁰⁶AtAstatine30.6 min

β⁺99.1%

α²⁰²Bi0.90%

²⁰⁶PoPolonium8.80 d

β⁺94.5%

α²⁰²Pb5.45%

²⁰⁶BiBismuth6.24 d

β⁺100.0%

²⁰⁶PbLeadSTABLE

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

Other Isotopes of Protactinium

211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241

← Back to ProtactiniumData: IAEA NDS · ENSDF