Periodic Table/Astatine/²¹⁰At

← 209At211At →

²¹⁰At

Astatine-210

Radioactive· Half-life: 8.10 h

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

85

Neutrons (N)

125

Mass Number (A)

210

Atomic Mass

209.987147AMU

Spin / Parity

5

Binding E/A

7.605keV

Natural Abundance

Trace / None

Half-life

8.10 h

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

β⁺

99.8%

α

0.2%

Decay Chain

²¹⁰AtAstatine8.10 h

β⁺99.8%

α²⁰⁶Bi0.17%

²¹⁰PoPolonium138 d

α100.0%

²⁰⁶PbLeadSTABLE

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

Other Isotopes of Astatine

191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229

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