Amerisium

Amerisium (Am)

chemical element with the atomic number of 95
Atomic Number95
Atomic Weight243
Nombor jisim223
Group
Period7
Blockf
proton95 p+
neutron128 n0
Elektron95 e-
Animated Model Bohr of Am (Amerisium)

Sifat Fizikal

Jejari Atom
175 pm
molar volume
Jejari kovalen
166 pm
Metallic Radius
ionic radius
121 pm
Crystal Radius
135 pm
Jejari van der Waals
244 pm
ketumpatan
Atomic Radii Of The Elements: Amerisium0102030405060708090100110120130140150160170180190200210220230240250pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
ionization energy
ionization energy of Am (Amerisium)
Entalpi pengewapan
238.5 kJ/mol
entalpi pelakuran
standard enthalpy of formation
284 kJ/mol
Elektron
Petala elektron2, 8, 18, 32, 25, 8, 2
Model Bohr: Am (Amerisium)
Elektron valens2
Teori ion Lewis: Am (Amerisium)
tatarajah elektron[Rn] 5f7 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f7 7s2
Enhanced Model Bohr of Am (Amerisium)
Orbital Diagram of Am (Amerisium)
Keadaan pengoksidaan2, 3, 4, 5, 6, 7
Keelektronegatifan
Electrophilicity Index
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
Melting Point
1,449.15 K
critical pressure
critical temperature
triple point
rupa
warna
Silver
rupasilvery white
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Kekonduksian elektrik
Kerintangan dan kekonduksian elektrik
Kesuperkonduksian
0.6 K
kemagnetan
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000515 m³/Kg
magnetic susceptibility (Molar)
0.00000001251 m³/mol
magnetic susceptibility (Volume)
0.000704
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
Modulus pukal
shear modulus
Young's modulus
Nisbah Poisson
Kelajuan bunyi
pengelasan
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
Nombor kuantum8S7/2
space group194 (P63/mmc)

Isotopes of Americium

Stable Isotopes0
Unstable Isotopes27
Natural Isotopes0

223Am

Nombor jisim223
nombor neutron128
jisim atom relatif
223.04584 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
10 ± 9 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan2015
parity-

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

224Am

Nombor jisim224
nombor neutron129
jisim atom relatif
224.046442 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin
nuclear quadrupole moment
tarikh penemuan
parity

decay modeKeamatan (fizik)
α (α emission)
SF (spontaneous fission)

225Am

Nombor jisim225
nombor neutron130
jisim atom relatif
225.045508 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin9/2
nuclear quadrupole moment
tarikh penemuan
parity-

decay modeKeamatan (fizik)
α (α emission)
SF (spontaneous fission)

226Am

Nombor jisim226
nombor neutron131
jisim atom relatif
226.04613 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin
nuclear quadrupole moment
tarikh penemuan
parity

decay modeKeamatan (fizik)
α (α emission)
SF (spontaneous fission)

227Am

Nombor jisim227
nombor neutron132
jisim atom relatif
227.045282 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin9/2
nuclear quadrupole moment
tarikh penemuan
parity-

decay modeKeamatan (fizik)
α (α emission)
SF (spontaneous fission)

228Am

Nombor jisim228
nombor neutron133
jisim atom relatif
228.046001 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin
nuclear quadrupole moment
tarikh penemuan
parity

decay modeKeamatan (fizik)
α (α emission)
SF (spontaneous fission)

229Am

Nombor jisim229
nombor neutron134
jisim atom relatif
229.045282534 ± 0.000114169 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.8 ± 1.5 s
Spin5/2
nuclear quadrupole moment
tarikh penemuan2015
parity-

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

230Am

Nombor jisim230
nombor neutron135
jisim atom relatif
230.046025 ± 0.000153 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
40 ± 9 s
Spin1
nuclear quadrupole moment
tarikh penemuan2003
parity-

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

231Am

Nombor jisim231
nombor neutron136
jisim atom relatif
231.045529 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin5/2
nuclear quadrupole moment
tarikh penemuan
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

232Am

Nombor jisim232
nombor neutron137
jisim atom relatif
232.046613 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.31 ± 0.04 m
Spin1
nuclear quadrupole moment
tarikh penemuan1967
parity-

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

233Am

Nombor jisim233
nombor neutron138
jisim atom relatif
233.046468 ± 0.000123 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.2 ± 0.8 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan2000
parity-

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

234Am

Nombor jisim234
nombor neutron139
jisim atom relatif
234.047731 ± 0.000172 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.32 ± 0.08 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1967
parity-

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

235Am

Nombor jisim235
nombor neutron140
jisim atom relatif
235.047906478 ± 0.000056661 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
10.3 ± 0.6 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1996
parity-

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

236Am

Nombor jisim236
nombor neutron141
jisim atom relatif
236.049427 ± 0.000127 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.6 ± 0.1 m
Spin5
nuclear quadrupole moment
tarikh penemuan1998
parity-

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

237Am

Nombor jisim237
nombor neutron142
jisim atom relatif
237.049995 ± 0.000064 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
73.6 ± 0.8 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1970
parity-

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

238Am

Nombor jisim238
nombor neutron143
jisim atom relatif
238.051982531 ± 0.000063243 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
98 ± 3 m
Spin1
nuclear quadrupole moment
tarikh penemuan1950
parity+

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

239Am

Nombor jisim239
nombor neutron144
jisim atom relatif
239.053022729 ± 0.000002127 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
11.9 ± 0.1 h
Spin5/2
nuclear quadrupole moment
tarikh penemuan1949
parity-

decay modeKeamatan (fizik)
ϵ (electron capture)99.99%
α (α emission)0.01%

240Am

Nombor jisim240
nombor neutron145
jisim atom relatif
240.055298374 ± 0.000014849 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
50.8 ± 0.3 h
Spin3
nuclear quadrupole moment
tarikh penemuan1949
parity-

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

241Am

Nombor jisim241
nombor neutron146
jisim atom relatif
241.056827343 ± 0.000001195 Da
g-factor
0.64 ± 0.004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
432.6 ± 0.6 y
Spin5/2
nuclear quadrupole moment
4.34 ± 0.05
tarikh penemuan1949
parity-

decay modeKeamatan (fizik)
α (α emission)100%
SF (spontaneous fission)3.6%

242Am

Nombor jisim242
nombor neutron147
jisim atom relatif
242.059547358 ± 0.000001199 Da
g-factor
0.3854 ± 0.0017
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
16.02 ± 0.02 h
Spin1
nuclear quadrupole moment
-2.4 ± 0.4
tarikh penemuan1949
parity-

decay modeKeamatan (fizik)
β (β decay)82.7%
ϵ (electron capture)17.3%

243Am

Nombor jisim243
nombor neutron148
jisim atom relatif
243.061379889 ± 0.00000149 Da
g-factor
0.608 ± 0.004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
7.35 ± 0.009 ky
Spin5/2
nuclear quadrupole moment
4.32 ± 0.06
tarikh penemuan1950
parity-

decay modeKeamatan (fizik)
α (α emission)100%
SF (spontaneous fission)3.7%

244Am

Nombor jisim244
nombor neutron149
jisim atom relatif
244.064282892 ± 0.0000016 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
10.01 ± 0.03 h
Spin6
nuclear quadrupole moment
tarikh penemuan1950
parity-

decay modeKeamatan (fizik)
β (β decay)100%

245Am

Nombor jisim245
nombor neutron150
jisim atom relatif
245.066452827 ± 0.000002024 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.05 ± 0.01 h
Spin5/2
nuclear quadrupole moment
tarikh penemuan1955
parity+

decay modeKeamatan (fizik)
β (β decay)100%

246Am

Nombor jisim246
nombor neutron151
jisim atom relatif
246.069774 ± 0.000019 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
39 ± 3 m
Spin7
nuclear quadrupole moment
tarikh penemuan1955
parity-

decay modeKeamatan (fizik)
β (β decay)100%

247Am

Nombor jisim247
nombor neutron152
jisim atom relatif
247.072092 ± 0.000107 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
23 ± 1.3 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1967
parity

decay modeKeamatan (fizik)
β (β decay)100%

248Am

Nombor jisim248
nombor neutron153
jisim atom relatif
248.075752 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin3
nuclear quadrupole moment
tarikh penemuan
parity+

decay modeKeamatan (fizik)
β (β decay)

249Am

Nombor jisim249
nombor neutron154
jisim atom relatif
249.07848 ± 0.00032 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin5/2
nuclear quadrupole moment
tarikh penemuan
parity

decay modeKeamatan (fizik)
β (β decay)
Americium microscope

sejarah

penemu atau perekaG.T.Seaborg, R.A.James, L.O.Morgan, A.Ghiorso
tempat penemuanUnited States
tarikh penemuan1945
EtimologiNamed for the American continent, by analogy with europium.
sebutanam-er-ISH-i-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
natural abundance (lautan)
natural abundance (Tubuh manusia)
0 %
natural abundance (Meteoroid)
0 %
natural abundance (Matahari)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants