Америци

Америци (Am)

chemical element with the atomic number of 95
Atomic Number95
Atomic Weight243
жингийн тоо223
Group
Period7
Blockf
Протон95 p+
Нейтрон128 n0
Электрон95 e-
Animated Bohr model of Am (Америци)

Physical Property

Atomic Radius
molar volume
Covalent Radius
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density
Atomic Radii Of The Elements: Америци0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

энерги
proton affinity
electron affinity
ionization energy
ionization energy of Am (Америци)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Электрон
electron shell2, 8, 18, 32, 25, 8, 2
Bohr model: Am (Америци)
valence electron2
Lewis structure: Am (Америци)
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 (Америци)
Orbital Diagram of Am (Америци)
Исэлдэлтийн зэрэг2, 3, 4, 5, 6, 7
Цахилгаан сөрөг чанар
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
Гурван фазын цэг
appearance
Өнгө
Silver
appearancesilvery white
Хугалах илтгэгч
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
Хэт дамжуулагч
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000515 m³/Kg
magnetic susceptibility (Molar)
0.00000001251 m³/mol
magnetic susceptibility (Volume)
0.000704
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
Хатуулаг
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Дууны хурд
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number39
Mendeleev Number26
Pettifor Number42
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
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

жингийн тоо223
neutron number128
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
10 ± 9 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention2015
parity-

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

224Am

жингийн тоо224
neutron number129
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

225Am

жингийн тоо225
neutron number130
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin9/2
nuclear quadrupole moment
time of discovery or invention
parity-

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

226Am

жингийн тоо226
neutron number131
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

227Am

жингийн тоо227
neutron number132
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin9/2
nuclear quadrupole moment
time of discovery or invention
parity-

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

228Am

жингийн тоо228
neutron number133
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

229Am

жингийн тоо229
neutron number134
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
1.8 ± 1.5 s
spin5/2
nuclear quadrupole moment
time of discovery or invention2015
parity-

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

230Am

жингийн тоо230
neutron number135
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
40 ± 9 s
spin1
nuclear quadrupole moment
time of discovery or invention2003
parity-

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

231Am

жингийн тоо231
neutron number136
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
time of discovery or invention
parity-

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

232Am

жингийн тоо232
neutron number137
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
1.31 ± 0.04 m
spin1
nuclear quadrupole moment
time of discovery or invention1967
parity-

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

233Am

жингийн тоо233
neutron number138
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
3.2 ± 0.8 m
spin5/2
nuclear quadrupole moment
time of discovery or invention2000
parity-

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

234Am

жингийн тоо234
neutron number139
Relative Atomic Mass
g-factor
0
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
2.32 ± 0.08 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1967
parity-

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

235Am

жингийн тоо235
neutron number140
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
10.3 ± 0.6 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1996
parity-

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

236Am

жингийн тоо236
neutron number141
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
3.6 ± 0.1 m
spin5
nuclear quadrupole moment
time of discovery or invention1998
parity-

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

237Am

жингийн тоо237
neutron number142
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
73.6 ± 0.8 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1970
parity-

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

238Am

жингийн тоо238
neutron number143
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
98 ± 3 m
spin1
nuclear quadrupole moment
time of discovery or invention1950
parity+

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

239Am

жингийн тоо239
neutron number144
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
11.9 ± 0.1 h
spin5/2
nuclear quadrupole moment
time of discovery or invention1949
parity-

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

240Am

жингийн тоо240
neutron number145
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
50.8 ± 0.3 h
spin3
nuclear quadrupole moment
time of discovery or invention1949
parity-

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

241Am

жингийн тоо241
neutron number146
Relative Atomic Mass
g-factor
0.64 ± 0.004
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
432.6 ± 0.6 y
spin5/2
nuclear quadrupole moment
4.34 ± 0.05
time of discovery or invention1949
parity-

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

242Am

жингийн тоо242
neutron number147
Relative Atomic Mass
g-factor
0.3854 ± 0.0017
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
16.02 ± 0.02 h
spin1
nuclear quadrupole moment
-2.4 ± 0.4
time of discovery or invention1949
parity-

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

243Am

жингийн тоо243
neutron number148
Relative Atomic Mass
g-factor
0.608 ± 0.004
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
7.35 ± 0.009 ky
spin5/2
nuclear quadrupole moment
4.32 ± 0.06
time of discovery or invention1950
parity-

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

244Am

жингийн тоо244
neutron number149
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
10.01 ± 0.03 h
spin6
nuclear quadrupole moment
time of discovery or invention1950
parity-

decay modeintensity
β (β decay)100%

245Am

жингийн тоо245
neutron number150
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
2.05 ± 0.01 h
spin5/2
nuclear quadrupole moment
time of discovery or invention1955
parity+

decay modeintensity
β (β decay)100%

246Am

жингийн тоо246
neutron number151
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
39 ± 3 m
spin7
nuclear quadrupole moment
time of discovery or invention1955
parity-

decay modeintensity
β (β decay)100%

247Am

жингийн тоо247
neutron number152
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
23 ± 1.3 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1967
parity

decay modeintensity
β (β decay)100%

248Am

жингийн тоо248
neutron number153
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin3
nuclear quadrupole moment
time of discovery or invention
parity+

decay modeintensity
β (β decay)

249Am

жингийн тоо249
neutron number154
Relative Atomic Mass
g-factor
natural abundance
Цацраг идэвхт задрал☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
time of discovery or invention
parity

decay modeintensity
β (β decay)
Americium microscope

түүх

discoverer or inventorG.T.Seaborg, R.A.James, L.O.Morgan, A.Ghiorso
location of discoveryUnited States
time of discovery or invention1945
etymologyNamed for the American continent, by analogy with europium.
pronunciationam-er-ISH-i-em (англи)

source

Abundance
Abundance in Earth's crust
natural abundance (Далай)
natural abundance (Хүний бие)
0 %
natural abundance (Солир)
0 %
natural abundance (Нар)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants