Periodic Table/Gold/¹⁸⁵Au

← 184Au186Au →

¹⁸⁵Au

Gold-185

Radioactive· Half-life: 4.25 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

79

Neutrons (N)

106

Mass Number (A)

185

Atomic Mass

184.965799AMU

Spin / Parity

5/2-

Binding E/A

7.691keV

Natural Abundance

Trace / None

Half-life

4.25 min

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

β⁺

99.7%

α

0.3%

Decay Chain

¹⁸⁵AuGold4.25 min

β⁺99.7%

α¹⁸¹Ir0.26%

¹⁸⁵PtPlatinum1.18 h

β⁺100.0%

α¹⁸¹Os0.01%

¹⁸⁵IrIridium14.4 h

β⁺100.0%

¹⁸⁵OsOsmium93.0 d

EC100.0%

¹⁸⁵ReRheniumSTABLE

5-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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