Periodic Table/Radium/²¹¹Ra

← 210Ra212Ra →

²¹¹Ra

Radium-211

Radioactive· Half-life: 12.6 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

88

Neutrons (N)

123

Mass Number (A)

211

Atomic Mass

211.000893AMU

Spin / Parity

5/2-

Binding E/A

7.528keV

Natural Abundance

Trace / None

Half-life

12.6 s

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

α

100.0%

β⁺

Decay Chain

²¹¹RaRadium12.6 s

α100.0%

β⁺²¹¹Fr

²⁰⁷RnRadon9.25 min

β⁺79.0%

α²⁰³Po21.0%

²⁰⁷AtAstatine1.81 h

β⁺90.0%

α²⁰³Bi10.0%

²⁰⁷PoPolonium5.80 h

β⁺100.0%

α²⁰³Pb0.02%

²⁰⁷BiBismuth31.2 y

β⁺100.0%

²⁰⁷PbLeadSTABLE

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

Other Isotopes of Radium

201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235

← Back to RadiumData: IAEA NDS · ENSDF