Periodic Table/Polonium/¹⁸⁹Po

← 188Po190Po →

¹⁸⁹Po

Polonium-189

Radioactive· Half-life: 3.50 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

84

Neutrons (N)

105

Mass Number (A)

189

Atomic Mass

188.998473AMU

Spin / Parity

5/2-

Binding E/A

7.504keV

Natural Abundance

Trace / None

Half-life

3.50 ms

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

α

100.0%

β⁺

Decay Chain

¹⁸⁹PoPolonium3.50 ms

α100.0%

β⁺¹⁸⁹Bi

¹⁸⁵PbLead6.30 s

β⁺66.0%

α¹⁸¹Hg34.0%

¹⁸⁵TlThallium19.5 s

β⁺100.0%

α¹⁸¹Au

¹⁸⁵HgMercury49.1 s

β⁺94.0%

α¹⁸¹Pt6.00%

¹⁸⁵AuGold4.25 min

β⁺99.7%

α¹⁸¹Ir0.26%

¹⁸⁵PtPlatinum1.18 h

β⁺100.0%

α¹⁸¹Os0.01%

¹⁸⁵IrIridium14.4 h

β⁺100.0%

¹⁸⁵OsOsmium93.0 d

EC100.0%

¹⁸⁵ReRheniumSTABLE

9-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