Periodic Table/Gold/¹⁸⁹Au

← 188Au190Au →

¹⁸⁹Au

Gold-189

Radioactive· Half-life: 28.7 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

79

Neutrons (N)

110

Mass Number (A)

189

Atomic Mass

188.963948AMU

Spin / Parity

1/2+

Binding E/A

7.708keV

Natural Abundance

Trace / None

Half-life

28.7 min

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

β⁺

100.0%

α

3.0%

Decay Chain

¹⁸⁹AuGold28.7 min

β⁺100.0%

α¹⁸⁵Ir3.00%

¹⁸⁹PtPlatinum10.9 h

β⁺100.0%

¹⁸⁹IrIridium13.2 d

EC100.0%

¹⁸⁹OsOsmiumSTABLE

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

Other Isotopes of Gold

168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210

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