Periodic Table/Thallium/¹⁷⁸Tl

← 177Tl179Tl →

¹⁷⁸Tl

Thallium-178

Radioactive· Half-life: 255 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

81

Neutrons (N)

97

Mass Number (A)

178

Atomic Mass

177.995047AMU

Spin / Parity

4-

Binding E/A

7.509keV

Natural Abundance

Trace / None

Half-life

255 ms

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

α

62.0%

β⁺

38.0%

β⁺SF

0.1%

Decay Chain

¹⁷⁸TlThallium255 ms

α62.0%

β⁺¹⁷⁸Hg38.0%

¹⁷⁴AuGold139 ms

α90.0%

β⁺¹⁷⁴Pt

¹⁷⁰IrIridium910 ms

α5.20%

β⁺¹⁷⁰Os

¹⁶⁶ReRhenium2.25 s

β⁺88.0%

α¹⁶²Ta12.0%

¹⁶⁶WTungsten19.2 s

β⁺100.0%

α¹⁶²Hf0.04%

¹⁶⁶TaTantalum34.4 s

β⁺100.0%

¹⁶⁶HfHafnium6.77 min

β⁺100.0%

¹⁶⁶LuLutetium2.65 min

β⁺100.0%

¹⁶⁶YbYtterbium2.36 d

EC100.0%

¹⁶⁶TmThulium7.70 h

β⁺100.0%

¹⁶⁶ErErbiumSTABLE

11-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