Periodic Table/Francium/²⁰⁷Fr

← 206Fr208Fr →

²⁰⁷Fr

Francium-207

Radioactive· Half-life: 14.8 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

87

Neutrons (N)

120

Mass Number (A)

207

Atomic Mass

206.996941AMU

Spin / Parity

9/2-

Binding E/A

7.542keV

Natural Abundance

Trace / None

Half-life

14.8 s

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

α

95.0%

β⁺

Decay Chain

²⁰⁷FrFrancium14.8 s

α95.0%

β⁺²⁰⁷Rn

²⁰³AtAstatine7.40 min

β⁺69.0%

α¹⁹⁹Bi31.0%

²⁰³PoPolonium36.7 min

β⁺99.9%

α¹⁹⁹Pb0.11%

²⁰³BiBismuth11.8 h

β⁺100.0%

²⁰³PbLead2.16 d

EC100.0%

²⁰³TlThalliumSTABLE

6-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