Periodic Table/Francium/²¹⁷Fr

← 216Fr218Fr →

²¹⁷Fr

Francium-217

Radioactive· Half-life: 22.0 μs

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

87

Neutrons (N)

130

Mass Number (A)

217

Atomic Mass

217.004632AMU

Spin / Parity

9/2-

Binding E/A

7.533keV

Natural Abundance

Trace / None

Half-life

22.0 μs

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

α

100.0%

Decay Chain

²¹⁷FrFrancium22.0 μs

α100.0%

²¹³AtAstatine125 ns

α100.0%

²⁰⁹BiBismuth20100000000 Gy

α100.0%

²⁰⁵TlThalliumSTABLE

4-step decay chain → stable · Primary path shown

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