Atomic Number | 99 |
---|---|
Atomic Weight | 252 |
mass number | 239 |
Group | |
---|---|
Period | 7 |
Block | f |
Proton | 99 p+ |
---|---|
Neutron | 140 n0 |
Elektron | 99 e- |
Atomic Radius | |
---|---|
molar volume | |
Covalent Radius | |
Metallic Radius | |
ionic radius | |
Crystal Radius | |
Van der Waals radius | |
density |
energie | |
---|---|
proton affinity | |
electron affinity | |
ionization energy | |
enthalpy of vaporization | |
enthalpy of fusion | |
standard enthalpy of formation | |
Elektron | |
electron shell | 2, 8, 18, 32, 29, 8, 2 |
valence electron | 2 ⓘ |
electron configuration | [Rn] 5f11 7s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f11 7s2 |
oxidation number | 2, 3, 4 |
electronegativity | |
Electrophilicity Index | |
fundamental state of matter | |
phase of matter | Solid |
gaseous state of matter | |
Boiling Point | |
Melting Point | |
critical pressure | |
critical temperature | |
triple point | |
appearance | |
Faarf | Colorless
|
appearance | silver-colored |
refractive index | |
thermodynamic material property | |
Thermal Conductivity | |
thermal expansion | |
molar heat capacity | |
Specific Heat Capacity | |
heat capacity ratio | |
electrical properties | |
type | |
electrical conductivity | |
electrical resistivity | |
superconductivity | |
Magnetismus | |
type | |
magnetic susceptibility (Mass) | |
magnetic susceptibility (Molar) | |
magnetic susceptibility (Volume) | |
magnetic ordering | |
Curie temperature | |
Néel temperature | |
Struktur | |
Crystal Structure | () |
lattice constant | |
Lattice Angles | |
mechanical property | |
hardness | |
bulk modulus | |
shear modulus | |
Young's modulus | |
Poisson's ratio | |
speed of sound | |
classification | |
Category | Actinides, Actinides |
CAS Group | |
IUPAC Group | |
Glawe Number | 43 |
Mendeleev Number | 34 |
Pettifor Number | 38 |
Geochemical Class | |
Goldschmidt classification | synthetic |
Gas Basicity | |
---|---|
polarizability | |
C6 Dispersion Coefficient | |
allotrope | |
Neutron cross section | 160
|
Neutron Mass Absorption | |
quantum number | 5I15/2 |
space group | () |
Stable Isotopes | 0 |
---|---|
Unstable Isotopes | 20 |
Natural Isotopes | 0 |
mass number | 239 |
---|---|
neutron number | 140 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | |
spin | 3/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | |
parity | - |
decay mode | intensity |
---|---|
α (α emission) | |
β+ (β+ decay; β+ = ϵ + e+) | |
SF (spontaneous fission) |
mass number | 240 |
---|---|
neutron number | 141 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 6 ± 1,7 s
|
spin | 4 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 2017 |
parity | - |
decay mode | intensity |
---|---|
α (α emission) | 70% |
β+ (β+ decay; β+ = ϵ + e+) | 30% |
β+ SF (β+-delayed fission) | 0.16% |
mass number | 241 |
---|---|
neutron number | 142 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 5,1 ± 0,8 s
|
spin | 3/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1996 |
parity | - |
decay mode | intensity |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) |
mass number | 242 |
---|---|
neutron number | 143 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 17,8 ± 1,6 s
|
spin | 2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1994 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 57% |
β+ (β+ decay; β+ = ϵ + e+) | 43% |
β+ SF (β+-delayed fission) | 0.6% |
mass number | 243 |
---|---|
neutron number | 144 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 22,1 ± 1,4 s
|
spin | 7/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1973 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 61% |
β+ (β+ decay; β+ = ϵ + e+) | |
SF (spontaneous fission) | 1% |
mass number | 244 |
---|---|
neutron number | 145 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 37 ± 4 s
|
spin | 6 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1973 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 95% |
α (α emission) | 5% |
β+ SF (β+-delayed fission) | 0.011% |
mass number | 245 |
---|---|
neutron number | 146 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 1,11 ± 0,06 m
|
spin | 3/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1967 |
parity | - |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 51% |
α (α emission) | 49% |
mass number | 246 |
---|---|
neutron number | 147 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 7,5 ± 0,5 m
|
spin | 4 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1954 |
parity | - |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 90.1% |
α (α emission) | 9.9% |
β+ SF (β+-delayed fission) | 0.003% |
mass number | 247 |
---|---|
neutron number | 148 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 4,55 ± 0,26 m
|
spin | 7/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1967 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 93% |
α (α emission) | 7% |
SF (spontaneous fission) |
mass number | 248 |
---|---|
neutron number | 149 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 24 ± 3 m
|
spin | 2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1956 |
parity | - |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
α (α emission) | 0.25% |
β+ SF (β+-delayed fission) | 3.5% |
mass number | 249 |
---|---|
neutron number | 150 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 102,2 ± 0,6 m
|
spin | 7/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1956 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
α (α emission) | 0.57% |
mass number | 250 |
---|---|
neutron number | 151 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 8,6 ± 0,1 h
|
spin | 6 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1956 |
parity |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
α (α emission) |
mass number | 251 |
---|---|
neutron number | 152 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 33 ± 1 h
|
spin | 3/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1956 |
parity | - |
decay mode | intensity |
---|---|
ϵ (electron capture) | 99.5% |
α (α emission) | 0.5% |
mass number | 252 |
---|---|
neutron number | 153 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 471,7 ± 1,9 d
|
spin | 4 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1956 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 78% |
ϵ (electron capture) | 22% |
mass number | 253 |
---|---|
neutron number | 154 |
Relative Atomic Mass | |
g-factor | 1,1714285714286 ± 0,02
|
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 20,47 ± 0,03 d
|
spin | 7/2 |
nuclear quadrupole moment | 6,7 ± 0,8
|
Datum vun der Entdeckung | 1954 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 8.7% |
mass number | 254 |
---|---|
neutron number | 155 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 275,7 ± 0,5 d
|
spin | 7 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1954 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
ϵ (electron capture) | |
β− (β− decay) | 1.74% |
SF (spontaneous fission) | 3% |
mass number | 255 |
---|---|
neutron number | 156 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 39,8 ± 1,2 d
|
spin | 7/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1954 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 92% |
α (α emission) | 8% |
SF (spontaneous fission) | 0.0041% |
mass number | 256 |
---|---|
neutron number | 157 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 7,6 h
|
spin | 7 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1976 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− SF (β−-delayed fission) | 0.002% |
mass number | 257 |
---|---|
neutron number | 158 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | 7,7 ± 0,2 d
|
spin | 7/2 |
nuclear quadrupole moment | |
Datum vun der Entdeckung | 1987 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
α (α emission) |
mass number | 258 |
---|---|
neutron number | 159 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Radioaktivitéit | ☢️ radioactive element |
half-life | |
spin | |
nuclear quadrupole moment | |
Datum vun der Entdeckung | |
parity |
decay mode | intensity |
---|---|
β− (β− decay) | |
α (α emission) |
Entdecker oder Erfinder | Argonne, Los Alamos, U of Calif |
---|---|
location of discovery | United States |
Datum vun der Entdeckung | 1952 |
Etymologie | Named in honor of the scientist Albert Einstein. |
pronunciation | ine-STINE-i-em (Englesch) |
Abundance | |
---|---|
Abundance in Earth's crust | |
natural abundance (Ozean) | |
natural abundance (Mënschleche Kierper) | 0 %
|
natural abundance (Meteoroid) | 0 %
|
natural abundance (Sonn) | 0 %
|
Abundance in Universe | 0 %
|