Periodic Table/Francium/²⁰⁴Fr

← 203Fr205Fr →

²⁰⁴Fr

Francium-204

Radioactive· Half-life: 1.75 s

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

87

Neutrons (N)

117

Mass Number (A)

204

Atomic Mass

204.000652AMU

Spin / Parity

3+

Binding E/A

7.517keV

Natural Abundance

Trace / None

Half-life

1.75 s

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

α

96.0%

β⁺

Decay Chain

²⁰⁴FrFrancium1.75 s

α96.0%

β⁺²⁰⁴Rn

²⁰⁰AtAstatine43.2 s

α52.0%

β⁺²⁰⁰Po48.0%

¹⁹⁶BiBismuth5.13 min

β⁺100.0%

α¹⁹²Tl0.00%

¹⁹⁶PbLead37.0 min

β⁺100.0%

α¹⁹²Hg3.00%

¹⁹⁶TlThallium1.84 h

β⁺100.0%

¹⁹⁶HgMercurySTABLE

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