Periodic Table/Radium/²¹⁵Ra

← 214Ra216Ra →

²¹⁵Ra

Radium-215

Radioactive· Half-life: 1.67 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

88

Neutrons (N)

127

Mass Number (A)

215

Atomic Mass

215.002718AMU

Spin / Parity

9/2+

Binding E/A

7.530keV

Natural Abundance

Trace / None

Half-life

1.67 ms

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

α

100.0%

Decay Chain

²¹⁵RaRadium1.67 ms

α100.0%

²¹¹RnRadon14.6 h

β⁺72.6%

α²⁰⁷Po27.4%

²¹¹AtAstatine7.21 h

EC58.2%

α²⁰⁷Bi41.8%

²¹¹PoPolonium516 ms

α100.0%

²⁰⁷PbLeadSTABLE

5-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

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