Periodic Table/Americium/²⁴⁶Am

← 245Am247Am →

²⁴⁶Am

Americium-246

Radioactive· Half-life: 39.0 min

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

95

Neutrons (N)

151

Mass Number (A)

246

Atomic Mass

246.069774AMU

Spin / Parity

7-

Binding E/A

7.308keV

Natural Abundance

Trace / None

Half-life

39.0 min

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

β⁻

100.0%

Decay Chain

²⁴⁶AmAmericium39.0 min

β⁻100.0%

²⁴⁶CmCurium4.71 ky

α100.0%

²⁴²PuPlutonium375 ky

α100.0%

²³⁸UUranium4.46 Gy

α100.0%

2β⁻²³⁸Pu2.20%

²³⁴ThThorium24.1 d

β⁻100.0%

α²³⁰Ra

²³⁴PaProtactinium6.70 h

β⁻100.0%

²³⁴UUranium246 ky

α100.0%

26Ne²⁰⁸Pb9.00%

28Mg²⁰⁶Hg1.40%

²³⁰ThThorium75.4 ky

α100.0%

24Ne²⁰⁶Hg5.80%

²²⁶RaRadium1.60 ky

α100.0%

¹⁴C²¹²Pb2.60%

2β⁻²²⁶Th

²²²RnRadon3.82 d

α100.0%

²¹⁸PoPolonium3.10 min

α100.0%

β⁻²¹⁸At0.02%

²¹⁴PbLead27.1 min

β⁻100.0%

²¹⁴BiBismuth19.9 min

β⁻100.0%

α²¹⁰Tl0.02%

β⁻α²¹⁰Pb0.00%

²¹⁴PoPolonium163 μs

α100.0%

²¹⁰PbLead22.2 y

β⁻100.0%

α²⁰⁶Hg1.90%

²¹⁰BiBismuth5.01 d

β⁻100.0%

α²⁰⁶Tl13.2%

²¹⁰PoPolonium138 d

α100.0%

²⁰⁶PbLeadSTABLE

18-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Americium

223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249

← Back to AmericiumData: IAEA NDS · ENSDF