Periodic Table/Polonium/²⁰³Po

← 202Po204Po →

²⁰³Po

Polonium-203

Radioactive· Half-life: 36.7 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

84

Neutrons (N)

119

Mass Number (A)

203

Atomic Mass

202.981416AMU

Spin / Parity

5/2-

Binding E/A

7.621keV

Natural Abundance

Trace / None

Half-life

36.7 min

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

β⁺

99.9%

α

0.1%

Decay Chain

²⁰³PoPolonium36.7 min

β⁺99.9%

α¹⁹⁹Pb0.11%

²⁰³BiBismuth11.8 h

β⁺100.0%

²⁰³PbLead2.16 d

EC100.0%

²⁰³TlThalliumSTABLE

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

Other Isotopes of Polonium

186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227

← Back to PoloniumData: IAEA NDS · ENSDF