Periodic Table/Francium/²⁰¹Fr

← 200Fr202Fr →

²⁰¹Fr

Francium-201

Radioactive· Half-life: 62.8 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

87

Neutrons (N)

114

Mass Number (A)

201

Atomic Mass

201.003852AMU

Spin / Parity

9/2-

Binding E/A

7.494keV

Natural Abundance

Trace / None

Half-life

62.8 ms

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

α

100.0%

β⁺

Decay Chain

²⁰¹FrFrancium62.8 ms

α100.0%

β⁺²⁰¹Rn

¹⁹⁷AtAstatine388 ms

α96.1%

β⁺¹⁹⁷Po3.90%

¹⁹³BiBismuth1.06 min

β⁺96.5%

α¹⁸⁹Tl3.50%

β⁺

¹⁹³TlThallium21.6 min

β⁺100.0%

¹⁹³HgMercury3.80 h

β⁺100.0%

¹⁹³AuGold17.6 h

β⁺100.0%

α¹⁸⁹Ir

¹⁹³PtPlatinum50.0 y

EC100.0%

¹⁹³IrIridiumSTABLE

9-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