Periodic Table/Protactinium/²²⁵Pa

← 224Pa226Pa →

²²⁵Pa

Protactinium-225

Radioactive· Half-life: 1.71 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

91

Neutrons (N)

134

Mass Number (A)

225

Atomic Mass

225.026148AMU

Spin / Parity

5/2-

Binding E/A

7.440keV

Natural Abundance

Trace / None

Half-life

1.71 s

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

α

100.0%

Decay Chain

²²⁵PaProtactinium1.71 s

α100.0%

²²¹AcActinium52.0 ms

α100.0%

²¹⁷FrFrancium22.0 μs

α100.0%

²¹³AtAstatine125 ns

α100.0%

²⁰⁹BiBismuth20100000000 Gy

α100.0%

²⁰⁵TlThalliumSTABLE

6-step decay chain → stable · Primary path shown

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