Periodic Table/Polonium/¹⁹¹Po

← 190Po192Po →

¹⁹¹Po

Polonium-191

Radioactive· Half-life: 22.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

84

Neutrons (N)

107

Mass Number (A)

191

Atomic Mass

190.994558AMU

Spin / Parity

3/2-

Binding E/A

7.529keV

Natural Abundance

Trace / None

Half-life

22.0 ms

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

α

100.0%

β⁺

Decay Chain

¹⁹¹PoPolonium22.0 ms

α100.0%

β⁺¹⁹¹Bi

¹⁸⁷PbLead15.2 s

β⁺90.5%

α¹⁸³Hg9.50%

¹⁸⁷TlThallium?

β⁺100.0%

α¹⁸³Au

¹⁸⁷HgMercury1.90 min

β⁺100.0%

α¹⁸³Pt

¹⁸⁷AuGold8.30 min

β⁺100.0%

α¹⁸³Ir

¹⁸⁷PtPlatinum2.35 h

β⁺100.0%

¹⁸⁷IrIridium10.5 h

β⁺100.0%

¹⁸⁷OsOsmiumSTABLE

8-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