Atomnummer | 100 |
---|---|
Atommassa | 257 |
masstal | 241 |
Grupp | |
---|---|
Period | 7 |
Block | f |
Protoner | 100 p+ |
---|---|
Neutroner | 141 n0 |
Electrons | 100 e- |
fysisk egenskap | |
---|---|
atomradie | |
molvolym | |
kovalent radie | 167 pm
|
Metallic Radius | |
ionic radius | 110,5 pm
|
Crystal Radius | 124,5 pm
|
Van der Waalsradie |
245 pm
|
densitet | 9,7 g/cm³
|
energi | |
proton affinity | |
Elektronaffinitet | |
joniseringsenergi | 6,5 eV/particle
|
ångbildningsvärme | |
smältvärme | |
Bildningsentalpi | |
Electrons | |
electron shell | 2, 8, 18, 32, 30, 8, 2 |
valenselektron | 2 |
elektronkonfiguration | [Rn] 5f12 7s2 |
oxidationstal | 2, 3 |
elektronegativitet | |
Electrophilicity | |
Phases | |
aggregationstillstånd | Fast |
Gas Phase | |
Kokpunkt | |
Smältpunkt | 1 800,15 K
|
critical pressure | |
critical temperature | |
trippelpunkt | |
Visual | |
färg | Färglös
|
appearance | |
Brytningsindex | |
materialegenskap | |
Värmeledningsförmåga | |
termisk expansion | |
molar heat capacity | |
Specifik värmekapacitet | |
heat capacity ratio | |
electrical properties | |
type | |
elektrisk konduktivitet | |
resistivitet | |
supraledare | |
magnetism | |
type | |
magnetisk susceptibilitet (Mass) | |
magnetisk susceptibilitet (Molar) | |
magnetisk susceptibilitet (Volume) | |
magnetic ordering | |
Curiepunkten | |
Néel temperature | |
Structure | |
Kristallstruktur | () |
Gitterkonstant | |
Lattice Angles | |
mekanisk materialegenskap | |
hårdhet | |
Kompressibilitet | |
skjuvmodul | |
Young's modulus | |
Poissons konstant | |
ljudhastighet | |
klassificering | |
Kategori | Aktinider, Actinides |
CAS Group | |
IUPAC Group | |
Glawe Number | 44 |
Mendeleev Number | 36 |
Pettifor Number | 37 |
Geochemical Class | |
Goldschmidt classification | synthetic |
övrigt | |
Gas Basicity | |
Dipole Polarizability | |
C6 Dispersion Coefficient | |
Allotropes | |
Träffyta | 5 800
|
Neutron Mass Absorption | |
kvanttal | 3H6 |
rymdgrupp | () |
Stabila isotoper | 0 |
---|---|
Instabila isotoper | 20 |
Radioactive Isotopes | 20 |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 241 |
g-factor | |
Halveringstid | 730 ± 60 us
|
Spinn | 5/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 2008 |
Paritet | + |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | % |
α (α emission) | 14% |
β+ (β+ decay; β+ = ϵ + e+) | 12% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 242 |
g-factor | 0
|
Halveringstid | 800 ± 200 us
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1975 |
Paritet | + |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | 100% |
α (α emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 243 |
g-factor | |
Halveringstid | 231 ± 9 ms
|
Spinn | 7/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1981 |
Paritet | - |
decay mode | Intensitet |
---|---|
α (α emission) | 91% |
SF (spontaneous fission) | 9% |
β+ (β+ decay; β+ = ϵ + e+) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 244 |
g-factor | 0
|
Halveringstid | 3,12 ± 0,08 ms
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1967 |
Paritet | + |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | 97% |
β+ (β+ decay; β+ = ϵ + e+) | 2% |
α (α emission) | 1% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 245 |
g-factor | |
Halveringstid | 4,2 ± 1,3 s
|
Spinn | 1/2 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1967 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) | 7% |
SF (spontaneous fission) | 0.3% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 246 |
g-factor | 0
|
Halveringstid | 1,54 ± 0,04 s
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1966 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 93.2% |
SF (spontaneous fission) | 6.8% |
ϵ (electron capture) | 1.3% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 247 |
g-factor | |
Halveringstid | 31 ± 1 s
|
Spinn | 7/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1967 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 64% |
β+ (β+ decay; β+ = ϵ + e+) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 248 |
g-factor | 0
|
Halveringstid | 34,5 ± 1,2 s
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1958 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) | % |
SF (spontaneous fission) | 0.1% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 249 |
g-factor | |
Halveringstid | 1,6 ± 0,1 m
|
Spinn | 7/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1960 |
Paritet | + |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | % |
α (α emission) | 33% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 250 |
g-factor | 0
|
Halveringstid | 31 ± 1,1 m
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1954 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 0.0069% |
ϵ (electron capture) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 251 |
g-factor | |
Halveringstid | 5,3 ± 0,08 h
|
Spinn | 9/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1957 |
Paritet | - |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 98.2% |
α (α emission) | 1.8% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 252 |
g-factor | 0
|
Halveringstid | 25,39 ± 0,04 h
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1956 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 0.0023% |
2β+ (double β+ decay) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 253 |
g-factor | |
Halveringstid | 3 ± 0,12 d
|
Spinn | 1/2 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1957 |
Paritet | + |
decay mode | Intensitet |
---|---|
ϵ (electron capture) | 88% |
α (α emission) | 12% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 254 |
g-factor | 0
|
Halveringstid | 3,24 ± 0,002 h
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1954 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 99.9408% |
SF (spontaneous fission) | 0.0592% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 255 |
g-factor | |
Halveringstid | 20,07 ± 0,07 h
|
Spinn | 7/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1954 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 2.4% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 256 |
g-factor | 0
|
Halveringstid | 157,1 ± 1,3 m
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1955 |
Paritet | + |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | 91.9% |
α (α emission) | 8.1% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 257 |
g-factor | |
Halveringstid | 100,5 ± 0,2 d
|
Spinn | 9/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1964 |
Paritet | + |
decay mode | Intensitet |
---|---|
α (α emission) | 99.79% |
SF (spontaneous fission) | 0.21% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 258 |
g-factor | 0
|
Halveringstid | 370 ± 14 us
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1971 |
Paritet | + |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | 100% |
α (α emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 259 |
g-factor | |
Halveringstid | 1,5 ± 0,2 s
|
Spinn | |
nuclear quadrupole moment | |
upptäcktsdatum | 1980 |
Paritet |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 260 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | |
Paritet | + |
decay mode | Intensitet |
---|---|
SF (spontaneous fission) | % |
upptäckare eller uppfinnare | Argonne, Los Alamos, U of Calif |
---|---|
fyndplats | United States |
upptäcktsdatum | 1953 |
etymologi | Named in honor of the scientist Enrico Fermi. |
uttal | FER-mi-em (engelska) |
Förekomst | |
---|---|
Abundance in Earth's crust | |
Abundance in Oceans | |
Abundance in Human Body | 0 %
|
Abundance in Meteor | 0 %
|
Abundance in Sun | 0 %
|
Abundance in Universe | 0 %
|