Amerikyûm

Amerikyûm (Am)

chemical element with the atomic number of 95
Atomic Number95
Atomic Weight243
Hejmara baristeyî223
Group
Period7
Blockf
Proton95 p+
Notron128 n0
Kareva95 e-
Animated Bohr model of Am (Amerikyûm)

Physical Property

Atomic Radius
175 pm
molar volume
Covalent Radius
166 pm
Metallic Radius
ionic radius
121 pm
Crystal Radius
135 pm
Van der Waals radius
244 pm
density
Atomic Radii Of The Elements: Amerikyûm0255075100125150175200225250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
ionization energy
ionization energy of Am (Amerikyûm)
enthalpy of vaporization
238,5 kJ/mol
enthalpy of fusion
standard enthalpy of formation
284 kJ/mol
Kareva
electron shell2, 8, 18, 32, 25, 8, 2
Bohr model: Am (Amerikyûm)
valence electron2
Lewis structure: Am (Amerikyûm)
electron configuration[Rn] 5f7 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f7 7s2
Enhanced Bohr model of Am (Amerikyûm)
Orbital Diagram of Am (Amerikyûm)
oxidation number2, 3, 4, 5, 6, 7
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1.449,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearancesilvery white
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
0,6 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000515 m³/Kg
magnetic susceptibility (Molar)
0,00000001251 m³/mol
magnetic susceptibility (Volume)
0,000704
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Leza dengê
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number39
Mendeleev Number26
Pettifor Number42
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
131 ± 25 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
74
Neutron Mass Absorption
quantum number8S7/2
space group194 (P63/mmc)

Isotopes of Americium

Stable Isotopes0
Unstable Isotopes27
Natural Isotopes0

223Am

Hejmara baristeyî223
neutron number128
Giraniya atomê
223,04584 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
10 ± 9 ms
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2015
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

224Am

Hejmara baristeyî224
neutron number129
Giraniya atomê
224,046442 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

decay modeintensity
α (α emission)
SF (spontaneous fission)

225Am

Hejmara baristeyî225
neutron number130
Giraniya atomê
225,045508 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

decay modeintensity
α (α emission)
SF (spontaneous fission)

226Am

Hejmara baristeyî226
neutron number131
Giraniya atomê
226,04613 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

decay modeintensity
α (α emission)
SF (spontaneous fission)

227Am

Hejmara baristeyî227
neutron number132
Giraniya atomê
227,045282 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

decay modeintensity
α (α emission)
SF (spontaneous fission)

228Am

Hejmara baristeyî228
neutron number133
Giraniya atomê
228,046001 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

decay modeintensity
α (α emission)
SF (spontaneous fission)

229Am

Hejmara baristeyî229
neutron number134
Giraniya atomê
229,045282534 ± 0,000114169 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,8 ± 1,5 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2015
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

230Am

Hejmara baristeyî230
neutron number135
Giraniya atomê
230,046025 ± 0,000153 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40 ± 9 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê2003
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ SF (β+-delayed fission)30%

231Am

Hejmara baristeyî231
neutron number136
Giraniya atomê
231,045529 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

232Am

Hejmara baristeyî232
neutron number137
Giraniya atomê
232,046613 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,31 ± 0,04 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)97%
α (α emission)
β+ SF (β+-delayed fission)0.069%

233Am

Hejmara baristeyî233
neutron number138
Giraniya atomê
233,046468 ± 0,000123 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,2 ± 0,8 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2000
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)4.5%

234Am

Hejmara baristeyî234
neutron number139
Giraniya atomê
234,047731 ± 0,000172 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2,32 ± 0,08 m
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.039%
β+ SF (β+-delayed fission)0.0066%

235Am

Hejmara baristeyî235
neutron number140
Giraniya atomê
235,047906478 ± 0,000056661 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
10,3 ± 0,6 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1996
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.6%
α (α emission)0.4%

236Am

Hejmara baristeyî236
neutron number141
Giraniya atomê
236,049427 ± 0,000127 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,6 ± 0,1 m
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1998
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)4%

237Am

Hejmara baristeyî237
neutron number142
Giraniya atomê
237,049995 ± 0,000064 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
73,6 ± 0,8 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1970
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.975%
α (α emission)0.025%

238Am

Hejmara baristeyî238
neutron number143
Giraniya atomê
238,051982531 ± 0,000063243 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
98 ± 3 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)1%

239Am

Hejmara baristeyî239
neutron number144
Giraniya atomê
239,053022729 ± 0,000002127 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
11,9 ± 0,1 h
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1949
parity-

decay modeintensity
ϵ (electron capture)99.99%
α (α emission)0.01%

240Am

Hejmara baristeyî240
neutron number145
Giraniya atomê
240,055298374 ± 0,000014849 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
50,8 ± 0,3 h
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1949
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)1.9%

241Am

Hejmara baristeyî241
neutron number146
Giraniya atomê
241,056827343 ± 0,000001195 Da
g-factor
0,64 ± 0,004
natural abundance
radioactivity☢️ radioactive element
half-life
432,6 ± 0,6 y
spin5/2
nuclear quadrupole moment
4,34 ± 0,05
dema îcadkirinê yan keşfê1949
parity-

decay modeintensity
α (α emission)100%
SF (spontaneous fission)3.6%

242Am

Hejmara baristeyî242
neutron number147
Giraniya atomê
242,059547358 ± 0,000001199 Da
g-factor
0,3854 ± 0,0017
natural abundance
radioactivity☢️ radioactive element
half-life
16,02 ± 0,02 h
spin1
nuclear quadrupole moment
-2,4 ± 0,4
dema îcadkirinê yan keşfê1949
parity-

decay modeintensity
β (β decay)82.7%
ϵ (electron capture)17.3%

243Am

Hejmara baristeyî243
neutron number148
Giraniya atomê
243,061379889 ± 0,00000149 Da
g-factor
0,608 ± 0,004
natural abundance
radioactivity☢️ radioactive element
half-life
7,35 ± 0,009 ky
spin5/2
nuclear quadrupole moment
4,32 ± 0,06
dema îcadkirinê yan keşfê1950
parity-

decay modeintensity
α (α emission)100%
SF (spontaneous fission)3.7%

244Am

Hejmara baristeyî244
neutron number149
Giraniya atomê
244,064282892 ± 0,0000016 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
10,01 ± 0,03 h
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity-

decay modeintensity
β (β decay)100%

245Am

Hejmara baristeyî245
neutron number150
Giraniya atomê
245,066452827 ± 0,000002024 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,05 ± 0,01 h
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1955
parity+

decay modeintensity
β (β decay)100%

246Am

Hejmara baristeyî246
neutron number151
Giraniya atomê
246,069774 ± 0,000019 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
39 ± 3 m
spin7
nuclear quadrupole moment
dema îcadkirinê yan keşfê1955
parity-

decay modeintensity
β (β decay)100%

247Am

Hejmara baristeyî247
neutron number152
Giraniya atomê
247,072092 ± 0,000107 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
23 ± 1,3 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1967
parity

decay modeintensity
β (β decay)100%

248Am

Hejmara baristeyî248
neutron number153
Giraniya atomê
248,075752 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity+

decay modeintensity
β (β decay)

249Am

Hejmara baristeyî249
neutron number154
Giraniya atomê
249,07848 ± 0,00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

decay modeintensity
β (β decay)
Americium microscope

dîrok

kaşîf an îcadkerG.T.Seaborg, R.A.James, L.O.Morgan, A.Ghiorso
location of discoveryUnited States
dema îcadkirinê yan keşfê1945
BêjenasîNamed for the American continent, by analogy with europium.
pronunciationam-er-ISH-i-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Roj)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants