Fermium

Fermium (Fm)

chemical element with the atomic number of 100
Atomic Number100
Atomic Weight257
Nombor jisim241
Group
Period7
Blockf
proton100 p+
neutron141 n0
Elektron100 e-
Animated Model Bohr of Fm (Fermium)

Sifat Fizikal

Jejari Atom
molar volume
Jejari kovalen
167 pm
Metallic Radius
ionic radius
110.5 pm
Crystal Radius
124.5 pm
Jejari van der Waals
245 pm
ketumpatan
9.7 g/cm³

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
ionization energy
ionization energy of Fm (Fermium)
Entalpi pengewapan
entalpi pelakuran
standard enthalpy of formation
Elektron
Petala elektron2, 8, 18, 32, 30, 8, 2
Model Bohr: Fm (Fermium)
Elektron valens2
Teori ion Lewis: Fm (Fermium)
tatarajah elektron[Rn] 5f12 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f12 7s2
Enhanced Model Bohr of Fm (Fermium)
Orbital Diagram of Fm (Fermium)
Keadaan pengoksidaan2, 3
Keelektronegatifan
Electrophilicity Index
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
Melting Point
1,800.15 K
critical pressure
critical temperature
triple point
rupa
warna
Colorless
rupa
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
kemagnetan
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
Modulus pukal
shear modulus
Young's modulus
Nisbah Poisson
Kelajuan bunyi
pengelasan
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number44
Mendeleev Number36
Pettifor Number37
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
113 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
5,800
Neutron Mass Absorption
Nombor kuantum3H6
space group ()

Isotopes of Fermium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

241Fm

Nombor jisim241
nombor neutron141
jisim atom relatif
241.074311 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
730 ± 60 us
Spin5/2
nuclear quadrupole moment
tarikh penemuan2008
parity+

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

242Fm

Nombor jisim242
nombor neutron142
jisim atom relatif
242.07343 ± 0.00043 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
800 ± 200 us
Spin0
nuclear quadrupole moment
0
tarikh penemuan1975
parity+

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

243Fm

Nombor jisim243
nombor neutron143
jisim atom relatif
243.074414 ± 0.00014 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
231 ± 9 ms
Spin7/2
nuclear quadrupole moment
tarikh penemuan1981
parity-

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

244Fm

Nombor jisim244
nombor neutron144
jisim atom relatif
244.074036 ± 0.000216 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.12 ± 0.08 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan1967
parity+

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

245Fm

Nombor jisim245
nombor neutron145
jisim atom relatif
245.075354 ± 0.00021 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.2 ± 1.3 s
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1967
parity+

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

246Fm

Nombor jisim246
nombor neutron146
jisim atom relatif
246.075353334 ± 0.000014675 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.54 ± 0.04 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1966
parity+

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

247Fm

Nombor jisim247
nombor neutron147
jisim atom relatif
247.076944 ± 0.000194 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
31 ± 1 s
Spin7/2
nuclear quadrupole moment
tarikh penemuan1967
parity+

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

248Fm

Nombor jisim248
nombor neutron148
jisim atom relatif
248.077185451 ± 0.000009122 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
34.5 ± 1.2 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1958
parity+

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

249Fm

Nombor jisim249
nombor neutron149
jisim atom relatif
249.078926042 ± 0.000006668 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.6 ± 0.1 m
Spin7/2
nuclear quadrupole moment
tarikh penemuan1960
parity+

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

250Fm

Nombor jisim250
nombor neutron150
jisim atom relatif
250.079519765 ± 0.000008468 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
31 ± 1.1 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1954
parity+

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

251Fm

Nombor jisim251
nombor neutron151
jisim atom relatif
251.08154513 ± 0.000015342 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.3 ± 0.08 h
Spin9/2
nuclear quadrupole moment
tarikh penemuan1957
parity-

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

252Fm

Nombor jisim252
nombor neutron152
jisim atom relatif
252.082466019 ± 0.000005604 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
25.39 ± 0.04 h
Spin0
nuclear quadrupole moment
0
tarikh penemuan1956
parity+

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

253Fm

Nombor jisim253
nombor neutron153
jisim atom relatif
253.085180945 ± 0.000001662 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3 ± 0.12 d
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1957
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)88%
α (α emission)12%

254Fm

Nombor jisim254
nombor neutron154
jisim atom relatif
254.086852424 ± 0.000001978 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.24 ± 0.002 h
Spin0
nuclear quadrupole moment
0
tarikh penemuan1954
parity+

decay modeKeamatan (fizik)
α (α emission)99.9408%
SF (spontaneous fission)0.0592%

255Fm

Nombor jisim255
nombor neutron155
jisim atom relatif
255.089963495 ± 0.000004223 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
20.07 ± 0.07 h
Spin7/2
nuclear quadrupole moment
tarikh penemuan1954
parity+

decay modeKeamatan (fizik)
α (α emission)100%
SF (spontaneous fission)2.4%

256Fm

Nombor jisim256
nombor neutron156
jisim atom relatif
256.091771699 ± 0.000003241 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
157.1 ± 1.3 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1955
parity+

decay modeKeamatan (fizik)
SF (spontaneous fission)91.9%
α (α emission)8.1%

257Fm

Nombor jisim257
nombor neutron157
jisim atom relatif
257.095105419 ± 0.000004669 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
100.5 ± 0.2 d
Spin9/2
nuclear quadrupole moment
tarikh penemuan1964
parity+

decay modeKeamatan (fizik)
α (α emission)99.79%
SF (spontaneous fission)0.21%

258Fm

Nombor jisim258
nombor neutron158
jisim atom relatif
258.097077 ± 0.000215 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
370 ± 14 us
Spin0
nuclear quadrupole moment
0
tarikh penemuan1971
parity+

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

259Fm

Nombor jisim259
nombor neutron159
jisim atom relatif
259.100596 ± 0.000304 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.5 ± 0.2 s
Spin
nuclear quadrupole moment
tarikh penemuan1980
parity

decay modeKeamatan (fizik)
SF (spontaneous fission)100%

260Fm

Nombor jisim260
nombor neutron160
jisim atom relatif
260.102809 ± 0.000467 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan
parity+

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

sejarah

penemu atau perekaArgonne, Los Alamos, U of Calif
tempat penemuanUnited States
tarikh penemuan1953
EtimologiNamed in honor of the scientist Enrico Fermi.
sebutanFER-mi-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