Americis

Americis (Am)

chemical element with the atomic number of 95
Atomic Number95
Atomic Weight243
mass number223
Group
Period7
Blockf
protonas95 p+
neutronas128 n0
elektronas95 e-
Animated Boro teorija of Am (Americis)

Fizikinė Ypatybė

Atomo Spindulys
molinis tūris
Kovalentinis spindulys
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
tankis
Atomic Radii Of The Elements: Americis0102030405060708090100110120130140150160170180190200210220230240250pmAtomo SpindulysKovalentinis SpindulysMetallic RadiusVan der Waals radius

Chemical Property

energija
proton affinity
electron affinity
ionization energy
ionization energy of Am (Americis)
Garavimo šiluma
lydymosi šiluma
standard enthalpy of formation
elektronas
electron shell2, 8, 18, 32, 25, 8, 2
Boro teorija: Am (Americis)
Valentinis elektronas2
Lewis structure: Am (Americis)
elektronų konfigūracija[Rn] 5f7 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f7 7s2
Enhanced Boro teorija of Am (Americis)
Orbital Diagram of Am (Americis)
oksidacijos laipsnis2, 3, 4, 5, 6, 7
Elektroneigiamumas
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
spalva
Silver
appearancesilvery white
lūžio rodiklis
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Elektrinis laidumas
electrical resistivity
Superlaidumas
Magnetizmas
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
struktūra
Crystal StructureSimple Hexagonal ()
Gardelės konstanta
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
kietis
bulk modulus
shear modulus
Jungo modulis
Puasono santykis
garso greitis
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number39
Mendeleev Number26
Pettifor Number42
Geochemical Class
Goldšmito klasifikacijasynthetic

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

mass number223
neutron number128
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
10 ± 9 ms
Sukinys9/2
nuclear quadrupole moment
atradimo data2015
parity-

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

224Am

mass number224
neutron number129
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys
nuclear quadrupole moment
atradimo data
parity

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

225Am

mass number225
neutron number130
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys9/2
nuclear quadrupole moment
atradimo data
parity-

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

226Am

mass number226
neutron number131
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys
nuclear quadrupole moment
atradimo data
parity

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

227Am

mass number227
neutron number132
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys9/2
nuclear quadrupole moment
atradimo data
parity-

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

228Am

mass number228
neutron number133
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys
nuclear quadrupole moment
atradimo data
parity

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

229Am

mass number229
neutron number134
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
1,8 ± 1,5 s
Sukinys5/2
nuclear quadrupole moment
atradimo data2015
parity-

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

230Am

mass number230
neutron number135
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
40 ± 9 s
Sukinys1
nuclear quadrupole moment
atradimo data2003
parity-

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

231Am

mass number231
neutron number136
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys5/2
nuclear quadrupole moment
atradimo data
parity-

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

232Am

mass number232
neutron number137
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
1,31 ± 0,04 m
Sukinys1
nuclear quadrupole moment
atradimo data1967
parity-

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

233Am

mass number233
neutron number138
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
3,2 ± 0,8 m
Sukinys5/2
nuclear quadrupole moment
atradimo data2000
parity-

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

234Am

mass number234
neutron number139
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
2,32 ± 0,08 m
Sukinys0
nuclear quadrupole moment
0
atradimo data1967
parity-

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

235Am

mass number235
neutron number140
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
10,3 ± 0,6 m
Sukinys5/2
nuclear quadrupole moment
atradimo data1996
parity-

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

236Am

mass number236
neutron number141
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
3,6 ± 0,1 m
Sukinys5
nuclear quadrupole moment
atradimo data1998
parity-

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

237Am

mass number237
neutron number142
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
73,6 ± 0,8 m
Sukinys5/2
nuclear quadrupole moment
atradimo data1970
parity-

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

238Am

mass number238
neutron number143
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
98 ± 3 m
Sukinys1
nuclear quadrupole moment
atradimo data1950
parity+

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

239Am

mass number239
neutron number144
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
11,9 ± 0,1 h
Sukinys5/2
nuclear quadrupole moment
atradimo data1949
parity-

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

240Am

mass number240
neutron number145
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
50,8 ± 0,3 h
Sukinys3
nuclear quadrupole moment
atradimo data1949
parity-

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

241Am

mass number241
neutron number146
Relative Atomic Mass
g-factor
0,64 ± 0,004
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
432,6 ± 0,6 y
Sukinys5/2
nuclear quadrupole moment
4,34 ± 0,05
atradimo data1949
parity-

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

242Am

mass number242
neutron number147
Relative Atomic Mass
g-factor
0,3854 ± 0,0017
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
16,02 ± 0,02 h
Sukinys1
nuclear quadrupole moment
−2,4 ± 0,4
atradimo data1949
parity-

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

243Am

mass number243
neutron number148
Relative Atomic Mass
g-factor
0,608 ± 0,004
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
7,35 ± 0,009 ky
Sukinys5/2
nuclear quadrupole moment
4,32 ± 0,06
atradimo data1950
parity-

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

244Am

mass number244
neutron number149
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
10,01 ± 0,03 h
Sukinys6
nuclear quadrupole moment
atradimo data1950
parity-

decay modeIntensyvumas
β (β decay)100%

245Am

mass number245
neutron number150
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
2,05 ± 0,01 h
Sukinys5/2
nuclear quadrupole moment
atradimo data1955
parity+

decay modeIntensyvumas
β (β decay)100%

246Am

mass number246
neutron number151
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
39 ± 3 m
Sukinys7
nuclear quadrupole moment
atradimo data1955
parity-

decay modeIntensyvumas
β (β decay)100%

247Am

mass number247
neutron number152
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
23 ± 1,3 m
Sukinys5/2
nuclear quadrupole moment
atradimo data1967
parity

decay modeIntensyvumas
β (β decay)100%

248Am

mass number248
neutron number153
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys3
nuclear quadrupole moment
atradimo data
parity+

decay modeIntensyvumas
β (β decay)

249Am

mass number249
neutron number154
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
Sukinys5/2
nuclear quadrupole moment
atradimo data
parity

decay modeIntensyvumas
β (β decay)
Americium microscope

istorija

atradėjas arba išradėjasG.T.Seaborg, R.A.James, L.O.Morgan, A.Ghiorso
location of discoveryUnited States
atradimo data1945
EtimologijaNamed for the American continent, by analogy with europium.
pronunciationam-er-ISH-i-em (anglų)

source

Abundance
Abundance in Earth's crust
natural abundance (Vandenynas)
natural abundance (Kūnas)
0 %
natural abundance (Meteoroidas)
0 %
natural abundance (Saulė)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants