Periodic Table/Radon/²⁰⁵Rn

← 204Rn206Rn →

²⁰⁵Rn

Radon-205

Radioactive· Half-life: 2.83 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

86

Neutrons (N)

119

Mass Number (A)

205

Atomic Mass

204.991723AMU

Spin / Parity

5/2-

Binding E/A

7.566keV

Natural Abundance

Trace / None

Half-life

2.83 min

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

β⁺

75.4%

α

24.6%

Decay Chain

²⁰⁵RnRadon2.83 min

β⁺75.4%

α²⁰¹Po24.6%

²⁰⁵AtAstatine26.9 min

β⁺90.0%

α²⁰¹Bi10.0%

²⁰⁵PoPolonium1.74 h

β⁺100.0%

α²⁰¹Pb0.04%

²⁰⁵BiBismuth14.9 d

β⁺100.0%

²⁰⁵PbLead17.0 My

EC100.0%

²⁰⁵TlThalliumSTABLE

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

Other Isotopes of Radon

193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231

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