Periodic Table/Radium/²¹⁶Ra

← 215Ra217Ra →

²¹⁶Ra

Radium-216

Radioactive· Half-life: 172 ns

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

88

Neutrons (N)

128

Mass Number (A)

216

Atomic Mass

216.003534AMU

Spin / Parity

0+

Binding E/A

7.529keV

Natural Abundance

Trace / None

Half-life

172 ns

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

α

100.0%

EC

1.0%

Decay Chain

²¹⁶RaRadium172 ns

α100.0%

EC²¹⁶Fr1.00%

²¹²RnRadon23.9 min

α100.0%

²⁰⁸PoPolonium2.90 y

α100.0%

β⁺²⁰⁸Bi0.00%

²⁰⁴PbLeadSTABLE

4-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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