Periodic Table/Francium/²¹²Fr

← 211Fr213Fr →

²¹²Fr

Francium-212

Radioactive· Half-life: 20.0 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

87

Neutrons (N)

125

Mass Number (A)

212

Atomic Mass

211.996225AMU

Spin / Parity

5+

Binding E/A

7.557keV

Natural Abundance

Trace / None

Half-life

20.0 min

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

β⁺

57.0%

α

43.0%

Decay Chain

²¹²FrFrancium20.0 min

β⁺57.0%

α²⁰⁸At43.0%

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 Francium

197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233

← Back to FranciumData: IAEA NDS · ENSDF