Fermium

Fermium (Fm)

chemical element with the atomic number of 100
Atomic Number100
Atomic Weight257
mass number241
Group
Period7
Blockf
Proton100 p+
Neytron141 n0
elektron100 e-
Animated Bor modeli of Fm (Fermium)

Fiziki Xassə

Atomic Radius
molar volume
Covalent Radius
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
sıxlıq

Chemical Property

enerji
proton affinity
electron affinity
ionization energy
ionization energy of Fm (Fermium)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
elektron
electron shell2, 8, 18, 32, 30, 8, 2
Bor modeli: Fm (Fermium)
valence electron2
Lewis structure: Fm (Fermium)
electron configuration[Rn] 5f12 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f12 7s2
Enhanced Bor modeli of Fm (Fermium)
Orbital Diagram of Fm (Fermium)
oxidation number2, 3
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
rəng
Colorless
appearance
İşığın tam daxili qayıtması
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
İfratkeçiricilik
Maqnetizm
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Küri nöqtəsi
Néel temperature
struktur
Crystal Structure{ERROR}
lattice constant
Lattice Angles
mechanical property
Bərklik
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Səs sürəti
təsnifat
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number44
Mendeleev Number36
Pettifor Number37
Geochemical Class
Qoldşmidtin fazalar qaydasısynthetic

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotrope
Neutron cross section
5.800
Neutron Mass Absorption
quantum number3H6
space group ()

Isotopes of Fermium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

241Fm

mass number241
neutron number141
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
730 ± 60 us
spin5/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi2008
parity+

decay modeintensity
SF (spontaneous fission)
α (α emission)14%
β+ (β+ decay; β+ = ϵ + e+)12%

242Fm

mass number242
neutron number142
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
800 ± 200 us
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1975
parity+

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

243Fm

mass number243
neutron number143
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
231 ± 9 ms
spin7/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi1981
parity-

decay modeintensity
α (α emission)91%
SF (spontaneous fission)9%
β+ (β+ decay; β+ = ϵ + e+)

244Fm

mass number244
neutron number144
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
3,12 ± 0,08 ms
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1967
parity+

decay modeintensity
SF (spontaneous fission)97%
β+ (β+ decay; β+ = ϵ + e+)2%
α (α emission)1%

245Fm

mass number245
neutron number145
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
4,2 ± 1,3 s
spin1/2
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1967
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)7%
SF (spontaneous fission)0.3%

246Fm

mass number246
neutron number146
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
1,54 ± 0,04 s
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1966
parity+

decay modeintensity
α (α emission)93.2%
SF (spontaneous fission)6.8%
ϵ (electron capture)1.3%

247Fm

mass number247
neutron number147
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
31 ± 1 s
spin7/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi1967
parity+

decay modeintensity
α (α emission)64%
β+ (β+ decay; β+ = ϵ + e+)

248Fm

mass number248
neutron number148
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
34,5 ± 1,2 s
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1958
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)
SF (spontaneous fission)0.1%

249Fm

mass number249
neutron number149
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
1,6 ± 0,1 m
spin7/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi1960
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)33%

250Fm

mass number250
neutron number150
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
31 ± 1,1 m
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1954
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)0.0069%
ϵ (electron capture)

251Fm

mass number251
neutron number151
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
5,3 ± 0,08 h
spin9/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi1957
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.2%
α (α emission)1.8%

252Fm

mass number252
neutron number152
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
25,39 ± 0,04 h
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1956
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)0.0023%
+ (double β+ decay)

253Fm

mass number253
neutron number153
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
3 ± 0,12 d
spin1/2
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1957
parity+

decay modeintensity
ϵ (electron capture)88%
α (α emission)12%

254Fm

mass number254
neutron number154
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
3,24 ± 0,002 h
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1954
parity+

decay modeintensity
α (α emission)99.9408%
SF (spontaneous fission)0.0592%

255Fm

mass number255
neutron number155
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
20,07 ± 0,07 h
spin7/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi1954
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)2.4%

256Fm

mass number256
neutron number156
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
157,1 ± 1,3 m
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1955
parity+

decay modeintensity
SF (spontaneous fission)91.9%
α (α emission)8.1%

257Fm

mass number257
neutron number157
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
100,5 ± 0,2 d
spin9/2
nuclear quadrupole moment
kəşf və ya ixtira tarixi1964
parity+

decay modeintensity
α (α emission)99.79%
SF (spontaneous fission)0.21%

258Fm

mass number258
neutron number158
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
370 ± 14 us
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi1971
parity+

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

259Fm

mass number259
neutron number159
Relative Atomic Mass
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
1,5 ± 0,2 s
spin
nuclear quadrupole moment
kəşf və ya ixtira tarixi1980
parity

decay modeintensity
SF (spontaneous fission)100%

260Fm

mass number260
neutron number160
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv element
Yarımparçalanma periodu
spin0
nuclear quadrupole moment
0
kəşf və ya ixtira tarixi
parity+

decay modeintensity
SF (spontaneous fission)
Fermium-Ytterbium Alloy
Electron shell 100 Fermium

tarix

ixtiraçı və ya kəşf edənArgonne, Los Alamos, U of Calif
location of discoveryUnited States
kəşf və ya ixtira tarixi1953
EtimologiyaNamed in honor of the scientist Enrico Fermi.
pronunciationFER-mi-em (ingilis)

source

Abundance
Abundance in Earth's crust
natural abundance (okean)
natural abundance (İnsan bədəni)
0 %
natural abundance (Meteoroid)
0 %
natural abundance (Günəş)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants