Periodic Table/Thallium/¹⁹¹Tl

← 190Tl192Tl →

¹⁹¹Tl

Thallium-191

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

81

Neutrons (N)

110

Mass Number (A)

191

Atomic Mass

190.971784AMU

Spin / Parity

1/2+

Binding E/A

7.660keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁺

Decay Chain

¹⁹¹TlThallium?

β⁺

¹⁹¹HgMercury49.0 min

β⁺100.0%

α¹⁸⁷Pt

¹⁹¹AuGold3.18 h

β⁺100.0%

¹⁹¹PtPlatinum2.83 d

EC100.0%

¹⁹¹IrIridiumSTABLE

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

Other Isotopes of Thallium

176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218

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