Fermij

Fermij (Fm)

chemical element with the atomic number of 100
Atomski broj100
Relativna atomska masa257
Maseni broj241
Skupina
Perioda7
Blokf
proton100 p+
neutron141 n0
elektron100 e-
Animated Bohrov model atoma of Fm (Fermij)

Physical Property

Atomski Radijus
Molni volumen
Kovalentni Radijus
Metallic Radius
Ionski radijus
Crystal Radius
Van der Waals radius
gustoća

Kemijsko Svojstvo

energija
proton affinity
Elektronski afinitet
ionization energy
ionization energy of Fm (Fermij)
Toplina isparivanja
toplina taljenja
standard enthalpy of formation
elektron
Elektronska ljuska2, 8, 18, 32, 30, 8, 2
Bohrov model atoma: Fm (Fermij)
valence electron2
Lewis structure: Fm (Fermij)
electron configuration[Rn] 5f12 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f12 7s2
Enhanced Bohrov model atoma of Fm (Fermij)
Orbital Diagram of Fm (Fermij)
Oksidacijski broj2, 3
Elektronegativnost
Electrophilicity Index
fundamental state of matter
agregatno stanjeČvrsto
gaseous state of matter
Vrelište
Talište
critical pressure
critical temperature
Trojna točka
appearance
boja
Bezbojan
appearance
Indeks prelamanja
thermodynamic material property
Toplinska vodljivost
Toplinsko istezanje
molar heat capacity
Specifični toplinski kapacitet
heat capacity ratio
electrical properties
type
electrical conductivity
Električna otpornost i provodnost
Supravodljivost
Magnetizam
type
Magnetna susceptibilnost (Mass)
Magnetna susceptibilnost (Molar)
Magnetna susceptibilnost (Volume)
magnetic ordering
Curieva temperatura
Néel temperature
struktura
Kristalna struktura ()
lattice constant
Lattice Angles
mechanical property
Tvrdoća
bulk modulus
shear modulus
Youngov modul elastičnosti
Poissonov omjer
brzina zvuka
classification
KategorijaAktinoidi, Actinides
CAS Group
IUPAC Group
Glawe Number44
Mendeleev Number36
Pettifor Number37
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotrope
Nuklearni udarni presjek
5.800
Neutron Mass Absorption
Kvantni brojevi3H6
space group ()

Isotopes of Fermium

Stabilni izotopi0
Nestabilni izotopi20
Natural Isotopes0

241Fm

Maseni broj241
neutron number141
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
730 ± 60 us
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma2008
Parnost+

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

242Fm

Maseni broj242
neutron number142
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
800 ± 200 us
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1975
Parnost+

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

243Fm

Maseni broj243
neutron number143
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
231 ± 9 ms
spin7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1981
Parnost-

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

244Fm

Maseni broj244
neutron number144
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,12 ± 0,08 ms
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1967
Parnost+

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

245Fm

Maseni broj245
neutron number145
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,2 ± 1,3 s
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1967
Parnost+

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

246Fm

Maseni broj246
neutron number146
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,54 ± 0,04 s
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1966
Parnost+

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

247Fm

Maseni broj247
neutron number147
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
31 ± 1 s
spin7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1967
Parnost+

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

248Fm

Maseni broj248
neutron number148
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
34,5 ± 1,2 s
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1958
Parnost+

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

249Fm

Maseni broj249
neutron number149
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,6 ± 0,1 m
spin7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1960
Parnost+

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

250Fm

Maseni broj250
neutron number150
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
31 ± 1,1 m
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1954
Parnost+

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

251Fm

Maseni broj251
neutron number151
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
5,3 ± 0,08 h
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1957
Parnost-

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

252Fm

Maseni broj252
neutron number152
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
25,39 ± 0,04 h
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1956
Parnost+

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

253Fm

Maseni broj253
neutron number153
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3 ± 0,12 d
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1957
Parnost+

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

254Fm

Maseni broj254
neutron number154
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,24 ± 0,002 h
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1954
Parnost+

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

255Fm

Maseni broj255
neutron number155
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
20,07 ± 0,07 h
spin7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1954
Parnost+

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

256Fm

Maseni broj256
neutron number156
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
157,1 ± 1,3 m
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1955
Parnost+

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

257Fm

Maseni broj257
neutron number157
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
100,5 ± 0,2 d
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1964
Parnost+

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

258Fm

Maseni broj258
neutron number158
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
370 ± 14 us
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1971
Parnost+

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

259Fm

Maseni broj259
neutron number159
Relativna Atomska Masa
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,5 ± 0,2 s
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma1980
Parnost

decay modeintensity
SF (spontaneous fission)100%

260Fm

Maseni broj260
neutron number160
Relativna Atomska Masa
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma
Parnost+

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

povijest

otkrio/izumioArgonne, Los Alamos, U of Calif
location of discoveryUnited States
vrijeme otkrića ili izuma1953
EtimologijaNamed in honor of the scientist Enrico Fermi.
pronunciationFER-mi-em (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori
natural abundance (ocean)
natural abundance (tijelo)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Sunce)
0 %
Zastupljenost u svemiru
0 %

Nuclear Screening Constants