Atomic Number | 94 |
---|---|
Atomic Weight | 244 |
Rhif màs | 221 |
Group | |
---|---|
Period | 7 |
Block | f |
Proton | 94 p+ |
---|---|
Niwtron | 127 n0 |
Electron | 94 e- |
Atomic Radius | |
---|---|
molar volume | |
covalent radius | |
Metallic Radius | |
ionic radius | |
Crystal Radius | |
Van der Waals radius | |
density |
egni | |
---|---|
proton affinity | |
electron affinity | |
ionization energy | |
enthalpy of vaporization | |
enthalpy of fusion | |
standard enthalpy of formation | |
Electron | |
plisgyn yr electron | 2, 8, 18, 32, 24, 8, 2 |
valence electron | 2 ⓘ |
trefn yr electronnau | [Rn] 5f6 7s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f6 7s2 |
Cyflwr ocsidiad | 2, 3, 4, 5, 6, 7, 8 |
Electronegatifedd |
1.3
|
Electrophilicity Index | |
cyflwr sylfaenol mater | |
cyflwr mater | Solid |
gaseous state of matter | |
Boiling Point | |
Melting Point | |
critical pressure | |
critical temperature | |
triple point | |
appearance | |
lliw | Silver
|
appearance | silvery white, tarnishing to dark gray in air |
Mynegrif plygiant | |
nodwedd ffisegol gwrthrych | |
Thermal Conductivity | |
thermal expansion | |
molar heat capacity | |
Specific Heat Capacity | |
heat capacity ratio | |
electrical properties | |
type | Conductor |
dargludedd trydanol | |
Gwrthedd | |
superconductivity | |
magnetism | |
type | paramagnetic |
magnetic susceptibility (Mass) | 0.0000000317 m³/Kg
|
magnetic susceptibility (Molar) | 0.000000007735 m³/mol
|
magnetic susceptibility (Volume) | 0.0006282
|
magnetic ordering | |
Curie temperature | |
Néel temperature | |
strwythur | |
Crystal Structure | Simple Monoclinic (MCL) |
lattice constant | |
Lattice Angles | π/2, 1.776571, π/2 |
nodwedd mecanyddol deunyddiau | |
hardness | |
bulk modulus | |
shear modulus | |
Young's modulus | |
Poisson's ratio | 0.21
|
speed of sound | |
classification | |
Category | Actinides, Actinides |
CAS Group | |
IUPAC Group | |
Glawe Number | 38 |
Mendeleev Number | 24 |
Pettifor Number | 43 |
Geochemical Class | |
Goldschmidt classification | synthetic |
Gas Basicity | |
---|---|
polarizability | |
C6 Dispersion Coefficient | |
allotrope | |
Neutron cross section | 1.7
|
Neutron Mass Absorption | |
quantum number | 7F0 |
space group | 11 (P121/m1) |
Stable Isotopes | 0 |
---|---|
Unstable Isotopes | 27 |
Natural Isotopes | 0 |
Rhif màs | 221 |
---|---|
neutron number | 127 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 9/2 |
nuclear quadrupole moment | |
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
SF (spontaneous fission) |
Rhif màs | 222 |
---|---|
neutron number | 128 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
SF (spontaneous fission) |
Rhif màs | 223 |
---|---|
neutron number | 129 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 9/2 |
nuclear quadrupole moment | |
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
SF (spontaneous fission) |
Rhif màs | 224 |
---|---|
neutron number | 130 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
SF (spontaneous fission) |
Rhif màs | 225 |
---|---|
neutron number | 131 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
SF (spontaneous fission) |
Rhif màs | 226 |
---|---|
neutron number | 132 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
SF (spontaneous fission) |
Rhif màs | 227 |
---|---|
neutron number | 133 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | |
parity | + |
decay mode | intensity |
---|---|
α (α emission) |
Rhif màs | 228 |
---|---|
neutron number | 134 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 2.1 ± 1.3 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1994 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) |
Rhif màs | 229 |
---|---|
neutron number | 135 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 91 ± 26 s
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1994 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 50% |
β+ (β+ decay; β+ = ϵ + e+) | 50% |
SF (spontaneous fission) | 7% |
Rhif màs | 230 |
---|---|
neutron number | 136 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 105 ± 10 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1990 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) |
Rhif màs | 231 |
---|---|
neutron number | 137 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 8.6 ± 0.5 m
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1999 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | |
α (α emission) | 13% |
Rhif màs | 232 |
---|---|
neutron number | 138 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 33.7 ± 0.5 m
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1973 |
parity | + |
decay mode | intensity |
---|---|
ϵ (electron capture) | |
α (α emission) | 20% |
Rhif màs | 233 |
---|---|
neutron number | 139 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 20.9 ± 0.4 m
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1957 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
α (α emission) | 0.12% |
Rhif màs | 234 |
---|---|
neutron number | 140 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 8.8 ± 0.1 h
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1949 |
parity | + |
decay mode | intensity |
---|---|
ϵ (electron capture) | 94% |
α (α emission) | 6% |
Rhif màs | 235 |
---|---|
neutron number | 141 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 25.3 ± 0.5 m
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1957 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 99.9972% |
α (α emission) | 0.0028% |
Rhif màs | 236 |
---|---|
neutron number | 142 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 2.858 ± 0.008 y
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1949 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 1.9% |
28Mg | 2% |
2β+ (double β+ decay) |
Rhif màs | 237 |
---|---|
neutron number | 143 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 45.64 ± 0.04 d
|
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1949 |
parity | - |
decay mode | intensity |
---|---|
ϵ (electron capture) | 99.9958% |
α (α emission) | 0.0042% |
Rhif màs | 238 |
---|---|
neutron number | 144 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 87.7 ± 0.1 y
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1949 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 1.9% |
32Si | 1.4% |
30Mg | 6% |
Rhif màs | 239 |
---|---|
neutron number | 145 |
Relative Atomic Mass | |
g-factor | 0.404 ± 0.008
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 24.11 ± 0.03 ky
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1946 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 3.1% |
Rhif màs | 240 |
---|---|
neutron number | 146 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 6.561 ± 0.007 ky
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1949 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 5.796% |
34Si | 1.3% |
Rhif màs | 241 |
---|---|
neutron number | 147 |
Relative Atomic Mass | |
g-factor | -0.2712 ± 0.0056
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 14.329 ± 0.029 y
|
spin | 5/2 |
nuclear quadrupole moment | 6
|
dyddiad darganfod | 1949 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
α (α emission) | 0.00245% |
SF (spontaneous fission) | 2.4% |
Rhif màs | 242 |
---|---|
neutron number | 148 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 375 ± 2 ky
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1950 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 100% |
SF (spontaneous fission) | 5.51% |
Rhif màs | 243 |
---|---|
neutron number | 149 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 4.9553 ± 0.0025 h
|
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1951 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 244 |
---|---|
neutron number | 150 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 81.3 ± 0.3 My
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1954 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | 99.877% |
SF (spontaneous fission) | 0.123% |
2β− (double β− decay) | 7.3% |
Rhif màs | 245 |
---|---|
neutron number | 151 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 10.5 ± 0.1 h
|
spin | 9/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1955 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 246 |
---|---|
neutron number | 152 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 10.84 ± 0.02 d
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1955 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 247 |
---|---|
neutron number | 153 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 2.27 ± 0.23 d
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1983 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
darganfyddwr neu ddyfeisiwr | G.T.Seaborg, J.W.Kennedy, E.M.McMillan, A.C.Wohl |
---|---|
man darganfod | United States |
dyddiad darganfod | 1940 |
geirdarddiad | Named for the planet Pluto. |
ynganiad | ploo-TOE-ni-em (Saesneg) |
Abundance | |
---|---|
Abundance in Earth's crust | |
natural abundance (cefnfor) | |
natural abundance (corff dynol) | 0 %
|
natural abundance (Awyrfaen) | 0 %
|
natural abundance (Haul) | 0 %
|
Abundance in Universe | 0 %
|