Periodic Table/Thallium/¹⁸⁷Tl

← 186Tl188Tl →

¹⁸⁷Tl

Thallium-187

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

81

Neutrons (N)

106

Mass Number (A)

187

Atomic Mass

186.975905AMU

Spin / Parity

1/2+

Binding E/A

7.631keV

Natural Abundance

Trace / None

Half-life

Unknown

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

β⁺

100.0%

α

Decay Chain

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

6-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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