Atomic Number | 58 |
---|---|
Atomic Weight | 140.116 |
Rhif màs | 140 |
Group | |
---|---|
Period | 6 |
Block | f |
Proton | 58 p+ |
---|---|
Niwtron | 82 n0 |
Electron | 58 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, 19, 9, 2 |
valence electron | 2 ⓘ |
trefn yr electronnau | [Xe] 4f1 5d1 6s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f1 5d1 6s2 |
Cyflwr ocsidiad | 2, 3, 4 |
Electronegatifedd |
1.12
|
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 |
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) | 0.00000022 m³/Kg
|
magnetic susceptibility (Molar) | 0.000000030826 m³/mol
|
magnetic susceptibility (Volume) | 0.0014716
|
magnetic ordering | |
Curie temperature | |
Néel temperature | |
strwythur | |
Crystal Structure | Simple Hexagonal (FCC) |
lattice constant | |
Lattice Angles | π/2, π/2, 2 π/3 |
nodwedd mecanyddol deunyddiau | |
hardness | |
bulk modulus | |
shear modulus | |
Young's modulus | |
Poisson's ratio | 0.24
|
speed of sound | |
classification | |
Category | Lanthanides, Lanthanides |
CAS Group | |
IUPAC Group | |
Glawe Number | 31 |
Mendeleev Number | 15 |
Pettifor Number | 32 |
Geochemical Class | rare earth & related |
Goldschmidt classification | litophile |
Gas Basicity | |
---|---|
polarizability | |
C6 Dispersion Coefficient | |
allotrope | |
Neutron cross section | 0.6
|
Neutron Mass Absorption | 0.00021
|
quantum number | 1G4 |
space group | 194 (P63/mmc) |
Stable Isotopes | 1 |
---|---|
Unstable Isotopes | 40 |
Natural Isotopes | 4 |
Rhif màs | 119 |
---|---|
neutron number | 61 |
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 |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | |
β+ p (β+-delayed proton emission) |
Rhif màs | 120 |
---|---|
neutron number | 62 |
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 |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | |
β+ p (β+-delayed proton emission) |
Rhif màs | 121 |
---|---|
neutron number | 63 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 1.1 ± 0.1 s
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1997 |
parity |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 1% |
Rhif màs | 122 |
---|---|
neutron number | 64 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 2005 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | |
β+ p (β+-delayed proton emission) |
Rhif màs | 123 |
---|---|
neutron number | 65 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 3.8 ± 0.2 s
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1984 |
parity |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) |
Rhif màs | 124 |
---|---|
neutron number | 66 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 9.1 ± 1.2 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1978 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 125 |
---|---|
neutron number | 67 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 9.7 ± 0.3 s
|
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1978 |
parity | - |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) |
Rhif màs | 126 |
---|---|
neutron number | 68 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 51 ± 0.3 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1978 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 127 |
---|---|
neutron number | 69 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 34 ± 2 s
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1978 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 128 |
---|---|
neutron number | 70 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 3.93 ± 0.02 m
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1968 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 129 |
---|---|
neutron number | 71 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 3.5 ± 0.3 m
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1977 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 130 |
---|---|
neutron number | 72 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 22.9 ± 0.5 m
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1965 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 131 |
---|---|
neutron number | 73 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 10.3 ± 0.3 m
|
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1966 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 132 |
---|---|
neutron number | 74 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 3.51 ± 0.11 h
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1960 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 133 |
---|---|
neutron number | 75 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 97 ± 4 m
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1951 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 134 |
---|---|
neutron number | 76 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 3.16 ± 0.04 d
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1951 |
parity | + |
decay mode | intensity |
---|---|
ϵ (electron capture) | 100% |
Rhif màs | 135 |
---|---|
neutron number | 77 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 17.7 ± 0.3 h
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1948 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 136 |
---|---|
neutron number | 78 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 0.186 ± 0.002
|
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1936 |
parity | + |
decay mode | intensity |
---|---|
2β+ (double β+ decay) |
Rhif màs | 137 |
---|---|
neutron number | 79 |
Relative Atomic Mass | |
g-factor | 0.64 ± 0.026666666666667
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 9 ± 0.3 h
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1948 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Rhif màs | 138 |
---|---|
neutron number | 80 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 0.251 ± 0.002
|
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1936 |
parity | + |
decay mode | intensity |
---|---|
2β+ (double β+ decay) |
Rhif màs | 139 |
---|---|
neutron number | 81 |
Relative Atomic Mass | |
g-factor | 0.70666666666667 ± 0.026666666666667
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 137.642 ± 0.02 d
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1948 |
parity | + |
decay mode | intensity |
---|---|
ϵ (electron capture) | 100% |
Rhif màs | 140 |
---|---|
neutron number | 82 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 88.449 ± 0.051
|
Dadfeilio ymbelydrol | stable isotope |
Hanner oes | Not Radioactive ☢️ |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1925 |
parity | + |
Rhif màs | 141 |
---|---|
neutron number | 83 |
Relative Atomic Mass | |
g-factor | 0.31142857142857 ± 0.011428571428571
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 32.505 ± 0.01 d
|
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1948 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 142 |
---|---|
neutron number | 84 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 11.114 ± 0.051
|
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1925 |
parity | + |
decay mode | intensity |
---|---|
α (α emission) | |
2β− (double β− decay) |
Rhif màs | 143 |
---|---|
neutron number | 85 |
Relative Atomic Mass | |
g-factor | 0.28666666666667 ± 0.0066666666666667
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 33.039 ± 0.006 h
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1948 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 144 |
---|---|
neutron number | 86 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 284.886 ± 0.025 d
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1945 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 145 |
---|---|
neutron number | 87 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 3.01 ± 0.06 m
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1954 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 146 |
---|---|
neutron number | 88 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 13.49 ± 0.16 m
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1953 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 147 |
---|---|
neutron number | 89 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 56.4 ± 1 s
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1964 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 148 |
---|---|
neutron number | 90 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 56.8 ± 0.3 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1964 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 149 |
---|---|
neutron number | 91 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 4.94 ± 0.04 s
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1974 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 150 |
---|---|
neutron number | 92 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 6.05 ± 0.07 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1970 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 151 |
---|---|
neutron number | 93 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 1.76 ± 0.06 s
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1997 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 152 |
---|---|
neutron number | 94 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 1.42 ± 0.02 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1990 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
Rhif màs | 153 |
---|---|
neutron number | 95 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 865 ± 25 ms
|
spin | 3/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1994 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) |
Rhif màs | 154 |
---|---|
neutron number | 96 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 722 ± 14 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 1994 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) |
Rhif màs | 155 |
---|---|
neutron number | 97 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 313 ± 7 ms
|
spin | 5/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 1994 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) |
Rhif màs | 156 |
---|---|
neutron number | 98 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 233 ± 9 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 2017 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) |
Rhif màs | 157 |
---|---|
neutron number | 99 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 175 ± 41 ms
|
spin | 7/2 |
nuclear quadrupole moment | |
dyddiad darganfod | 2017 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) |
Rhif màs | 158 |
---|---|
neutron number | 100 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | 99 ± 93 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | 2016 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) |
Rhif màs | 159 |
---|---|
neutron number | 101 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
Dadfeilio ymbelydrol | ☢️ elfen ymbelydrol |
Hanner oes | |
spin | 1/2 |
nuclear quadrupole moment | 0
|
dyddiad darganfod | |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | |
β− n (β−-delayed neutron emission) |
darganfyddwr neu ddyfeisiwr | W. von Hisinger, J. Berzelius, M. Klaproth |
---|---|
man darganfod | Sweden/Germany |
dyddiad darganfod | 1803 |
geirdarddiad | Named after the asteroid, Ceres, discovered two years before the element. |
ynganiad | SER-i-em (Saesneg) |
Abundance | |
---|---|
Abundance in Earth's crust | |
natural abundance (cefnfor) | |
natural abundance (corff dynol) | |
natural abundance (Awyrfaen) | 0.000075 %
|
natural abundance (Haul) | 0.0000004 %
|
Abundance in Universe | 0.000001 %
|
1 | s | 1.1519 |
2 | p | 4.2176 |
2 | s | 15.26 |
3 | d | 13.9147 |
3 | p | 19.0405 |
3 | s | 19.3408 |
4 | d | 32.3392 |
4 | f | 56.324 |
4 | p | 29.3936 |
4 | s | 28.32 |
5 | p | 41.0345 |
5 | s | 39.0865 |
6 | s | 47.2036 |