Periodic Table/Lead/¹⁹¹Pb

← 190Pb192Pb →

¹⁹¹Pb

Lead-191

Radioactive· Half-life: 1.33 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

82

Neutrons (N)

109

Mass Number (A)

191

Atomic Mass

190.978216AMU

Spin / Parity

3/2-

Binding E/A

7.622keV

Natural Abundance

Trace / None

Half-life

1.33 min

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

β⁺

100.0%

α

0.5%

Decay Chain

¹⁹¹PbLead1.33 min

β⁺100.0%

α¹⁸⁷Hg0.51%

¹⁹¹TlThallium?

β⁺

¹⁹¹HgMercury49.0 min

β⁺100.0%

α¹⁸⁷Pt

¹⁹¹AuGold3.18 h

β⁺100.0%

¹⁹¹PtPlatinum2.83 d

EC100.0%

¹⁹¹IrIridiumSTABLE

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

Other Isotopes of Lead

178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220

← Back to LeadData: IAEA NDS · ENSDF