Periodic Table/Thallium/¹⁸¹Tl

← 180Tl182Tl →

¹⁸¹Tl

Thallium-181

Radioactive· Half-life: 2.90 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

81

Neutrons (N)

100

Mass Number (A)

181

Atomic Mass

180.986260AMU

Spin / Parity

1/2+

Binding E/A

7.563keV

Natural Abundance

Trace / None

Half-life

2.90 s

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

β⁺

α

8.6%

Decay Chain

¹⁸¹TlThallium2.90 s

α8.60%

β⁺¹⁸¹Hg

¹⁷⁷AuGold1.50 s

β⁺60.0%

α¹⁷³Ir40.0%

¹⁷⁷PtPlatinum10.0 s

β⁺94.3%

α¹⁷³Os5.70%

¹⁷⁷IrIridium29.8 s

β⁺100.0%

α¹⁷³Re0.06%

¹⁷⁷OsOsmium3.00 min

β⁺100.0%

¹⁷⁷ReRhenium14.0 min

β⁺100.0%

¹⁷⁷WTungsten2.21 h

β⁺100.0%

¹⁷⁷TaTantalum2.35 d

β⁺100.0%

¹⁷⁷HfHafniumSTABLE

9-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

← Back to ThalliumData: IAEA NDS · ENSDF