Atomic Number | 55 |
---|---|
Atomic Weight | 132.90545196 |
mass number | 133 |
Group | 1 |
---|---|
Period | 6 |
Block | s |
proton | 55 p+ |
---|---|
neutron | 78 n0 |
elettron | 55 e- |
Atomic Radius | |
---|---|
molar volume | |
covalent radius | |
Metallic Radius | |
ionic radius | |
Crystal Radius | |
Van der Waals radius | |
densità |
enerġija | |
---|---|
proton affinity | |
electron affinity | |
ionization energy | |
enthalpy of vaporization | |
enthalpy of fusion | |
standard enthalpy of formation | |
elettron | |
electron shell | 2, 8, 18, 18, 8, 1 |
valence electron | 1 ⓘ |
electron configuration | [Xe] 6s1ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 |
oxidation number | -1, 1 |
electronegativity | 0.79
|
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 | |
kulur | Silver
|
appearance | silvery gold |
refractive index | |
thermodynamic material property | |
Thermal Conductivity | |
thermal expansion | |
molar heat capacity | |
Specific Heat Capacity | |
heat capacity ratio | |
electrical properties | |
type | Conductor |
electrical conductivity | |
electrical resistivity | |
superconductivity | |
magnetism | |
type | paramagnetic |
magnetic susceptibility (Mass) | 0.0000000028 m³/Kg
|
magnetic susceptibility (Molar) | 0.000000000372 m³/mol
|
magnetic susceptibility (Volume) | 0.00000526
|
magnetic ordering | |
Curie temperature | |
Néel temperature | |
structure | |
Crystal Structure | Body Centered Cubic (BCC) |
lattice constant | |
Lattice Angles | π/2, π/2, π/2 |
mechanical property | |
hardness | |
bulk modulus | |
shear modulus | |
Young's modulus | |
Poisson's ratio | |
speed of sound | |
classification | |
Category | Alkali metals, Alkali metals |
CAS Group | IA |
IUPAC Group | IA |
Glawe Number | 8 |
Mendeleev Number | 5 |
Pettifor Number | 8 |
Geochemical Class | alkali metal |
Goldschmidt classification | litophile |
Gas Basicity | |
---|---|
polarizability | |
C6 Dispersion Coefficient | |
allotrope | |
Neutron cross section | 29
|
Neutron Mass Absorption | 0.0077
|
quantum number | 2S1/2 |
space group | 229 (Im_3m) |
Stable Isotopes | 1 |
---|---|
Unstable Isotopes | 41 |
Natural Isotopes | 1 |
mass number | 111 |
---|---|
neutron number | 56 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | |
parity | + |
decay mode | intensity |
---|---|
p (proton emission) |
mass number | 112 |
---|---|
neutron number | 57 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 490 ± 30 us
|
spin | 1 |
nuclear quadrupole moment | |
time of discovery or invention | 1994 |
parity | + |
decay mode | intensity |
---|---|
p (proton emission) | 100% |
α (α emission) | 0.26% |
mass number | 113 |
---|---|
neutron number | 58 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 16.94 ± 0.09 us
|
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1984 |
parity | + |
decay mode | intensity |
---|---|
p (proton emission) | 100% |
mass number | 114 |
---|---|
neutron number | 59 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 570 ± 20 ms
|
spin | 1 |
nuclear quadrupole moment | |
time of discovery or invention | 1978 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
α (α emission) | 0.018% |
β+ p (β+-delayed proton emission) | 8.7% |
β+α (β+-delayed α emission) | 0.19% |
mass number | 115 |
---|---|
neutron number | 60 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.4 ± 0.8 s
|
spin | 9/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1978 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 0.07% |
mass number | 116 |
---|---|
neutron number | 61 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 700 ± 40 ms
|
spin | 1 |
nuclear quadrupole moment | |
time of discovery or invention | 1975 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 0.28% |
β+α (β+-delayed α emission) | 0.049% |
mass number | 117 |
---|---|
neutron number | 62 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 8.4 ± 0.6 s
|
spin | 9/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1972 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 118 |
---|---|
neutron number | 63 |
Relative Atomic Mass | |
g-factor | 1.935 ± 0.0025
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 14 ± 2 s
|
spin | 2 |
nuclear quadrupole moment | 1.31 ± 0.17
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 0.021% |
β+α (β+-delayed α emission) | 0.0012% |
mass number | 119 |
---|---|
neutron number | 64 |
Relative Atomic Mass | |
g-factor | 1.2111111111111 ± 0.0066666666666667
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 43 ± 0.2 s
|
spin | 9/2 |
nuclear quadrupole moment | 2.65 ± 0.17
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+α (β+-delayed α emission) | 2% |
mass number | 120 |
---|---|
neutron number | 65 |
Relative Atomic Mass | |
g-factor | 1.93 ± 0.01
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 60.4 ± 0.6 s
|
spin | 2 |
nuclear quadrupole moment | 1.36 ± 0.07
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+α (β+-delayed α emission) | 2% |
β+ p (β+-delayed proton emission) | 7% |
mass number | 121 |
---|---|
neutron number | 66 |
Relative Atomic Mass | |
g-factor | 0.51266666666667 ± 0.0026666666666667
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 155 ± 4 s
|
spin | 3/2 |
nuclear quadrupole moment | 0.79 ± 0.04
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 122 |
---|---|
neutron number | 67 |
Relative Atomic Mass | |
g-factor | 0.133 ± 0.002
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 21.18 ± 0.19 s
|
spin | 1 |
nuclear quadrupole moment | -0.179 ± 0.01
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+α (β+-delayed α emission) | 2% |
mass number | 123 |
---|---|
neutron number | 68 |
Relative Atomic Mass | |
g-factor | 2.75 ± 0.014
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 5.88 ± 0.03 m
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1954 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 124 |
---|---|
neutron number | 69 |
Relative Atomic Mass | |
g-factor | 0.672 ± 0.003
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 30.9 ± 0.4 s
|
spin | 1 |
nuclear quadrupole moment | -0.69 ± 0.04
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 125 |
---|---|
neutron number | 70 |
Relative Atomic Mass | |
g-factor | 2.814 ± 0.014
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 44.35 ± 0.29 m
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1954 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 126 |
---|---|
neutron number | 71 |
Relative Atomic Mass | |
g-factor | 0.776 ± 0.004
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.64 ± 0.02 m
|
spin | 1 |
nuclear quadrupole moment | -0.64 ± 0.03
|
time of discovery or invention | 1954 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 127 |
---|---|
neutron number | 72 |
Relative Atomic Mass | |
g-factor | 2.914 ± 0.014
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 6.25 ± 0.1 h
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1950 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 128 |
---|---|
neutron number | 73 |
Relative Atomic Mass | |
g-factor | 0.972 ± 0.005
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 3.64 ± 0.014 m
|
spin | 1 |
nuclear quadrupole moment | -0.54 ± 0.03
|
time of discovery or invention | 1951 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 129 |
---|---|
neutron number | 74 |
Relative Atomic Mass | |
g-factor | 2.978 ± 0.016
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 32.06 ± 0.06 h
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1950 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 130 |
---|---|
neutron number | 75 |
Relative Atomic Mass | |
g-factor | 1.458 ± 0.007
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 29.21 ± 0.04 m
|
spin | 1 |
nuclear quadrupole moment | -0.056 ± 0.006
|
time of discovery or invention | 1952 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 98.4% |
β− (β− decay) | 1.6% |
mass number | 131 |
---|---|
neutron number | 76 |
Relative Atomic Mass | |
g-factor | 1.4144 ± 0.0012
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 9.689 ± 0.016 d
|
spin | 5/2 |
nuclear quadrupole moment | 0.59 ± 0.02
|
time of discovery or invention | 1947 |
parity | + |
decay mode | intensity |
---|---|
ϵ (electron capture) | 100% |
mass number | 132 |
---|---|
neutron number | 77 |
Relative Atomic Mass | |
g-factor | 1.1095 ± 0.0035
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 6.48 ± 0.006 d
|
spin | 2 |
nuclear quadrupole moment | 0.48 ± 0.02
|
time of discovery or invention | 1953 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 98.13% |
β− (β− decay) | 1.87% |
mass number | 133 |
---|---|
neutron number | 78 |
Relative Atomic Mass | |
g-factor | 0.73651428571429 ± 0.0004
|
natural abundance | 100
|
radioactivity | stable isotope |
half-life | Not Radioactive ☢️ |
spin | 7/2 |
nuclear quadrupole moment | -0.00343 ± 0.0001
|
time of discovery or invention | 1921 |
parity | + |
mass number | 134 |
---|---|
neutron number | 79 |
Relative Atomic Mass | |
g-factor | 0.747325 ± 0.00035
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 2.065 ± 0.0004 y
|
spin | 4 |
nuclear quadrupole moment | 0.37 ± 0.02
|
time of discovery or invention | 1940 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
ϵ (electron capture) | 0.0003% |
mass number | 135 |
---|---|
neutron number | 80 |
Relative Atomic Mass | |
g-factor | 0.77951428571429 ± 0.00037142857142857
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.33 ± 0.19 My
|
spin | 7/2 |
nuclear quadrupole moment | 0.048 ± 0.003
|
time of discovery or invention | 1949 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 136 |
---|---|
neutron number | 81 |
Relative Atomic Mass | |
g-factor | 0.741 ± 0.003
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 13.01 ± 0.05 d
|
spin | 5 |
nuclear quadrupole moment | 0.213 ± 0.015
|
time of discovery or invention | 1951 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 137 |
---|---|
neutron number | 82 |
Relative Atomic Mass | |
g-factor | 0.81068571428571 ± 0.0004
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 30.04 ± 0.04 y
|
spin | 7/2 |
nuclear quadrupole moment | 0.048 ± 0.002
|
time of discovery or invention | 1951 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 138 |
---|---|
neutron number | 83 |
Relative Atomic Mass | |
g-factor | 0.233 ± 0.0013333333333333
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 33.5 ± 0.2 m
|
spin | 3 |
nuclear quadrupole moment | 0.112 ± 0.017
|
time of discovery or invention | 1943 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 139 |
---|---|
neutron number | 84 |
Relative Atomic Mass | |
g-factor | 0.768 ± 0.0011428571428571
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 9.27 ± 0.05 m
|
spin | 7/2 |
nuclear quadrupole moment | -0.063 ± 0.014
|
time of discovery or invention | 1939 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 140 |
---|---|
neutron number | 85 |
Relative Atomic Mass | |
g-factor | 0.134 ± 0.001
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 63.7 ± 0.3 s
|
spin | 1 |
nuclear quadrupole moment | -0.094 ± 0.015
|
time of discovery or invention | 1950 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 141 |
---|---|
neutron number | 86 |
Relative Atomic Mass | |
g-factor | 0.69457142857143 ± 0.0028571428571429
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 24.84 ± 0.16 s
|
spin | 7/2 |
nuclear quadrupole moment | -0.42 ± 0.07
|
time of discovery or invention | 1962 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 0.0342% |
mass number | 142 |
---|---|
neutron number | 87 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.687 ± 0.01 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1962 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 0.089% |
mass number | 143 |
---|---|
neutron number | 88 |
Relative Atomic Mass | |
g-factor | 0.57933333333333 ± 0.0026666666666667
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.802 ± 0.008 s
|
spin | 3/2 |
nuclear quadrupole moment | 0.44 ± 0.03
|
time of discovery or invention | 1962 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 1.62% |
mass number | 144 |
---|---|
neutron number | 89 |
Relative Atomic Mass | |
g-factor | -0.545 ± 0.003
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 994 ± 6 ms
|
spin | 1 |
nuclear quadrupole moment | 0.29 ± 0.02
|
time of discovery or invention | 1967 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 2.98% |
mass number | 145 |
---|---|
neutron number | 90 |
Relative Atomic Mass | |
g-factor | 0.522 ± 0.0026666666666667
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 582 ± 4 ms
|
spin | 3/2 |
nuclear quadrupole moment | 0.58 ± 0.06
|
time of discovery or invention | 1971 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 12.8% |
mass number | 146 |
---|---|
neutron number | 91 |
Relative Atomic Mass | |
g-factor | -0.514 ± 0.002
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 321.6 ± 0.9 ms
|
spin | 1 |
nuclear quadrupole moment | 0.21 ± 0.03
|
time of discovery or invention | 1971 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 14.2% |
2n (2-neutron emission) |
mass number | 147 |
---|---|
neutron number | 92 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 230.5 ± 0.9 ms
|
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1978 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 28.5% |
mass number | 148 |
---|---|
neutron number | 93 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 151.8 ± 1 ms
|
spin | 2 |
nuclear quadrupole moment | |
time of discovery or invention | 1978 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 28.7% |
2n (2-neutron emission) |
mass number | 149 |
---|---|
neutron number | 94 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 112.3 ± 2.5 ms
|
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1979 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 25% |
2n (2-neutron emission) |
mass number | 150 |
---|---|
neutron number | 95 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 81 ± 2.6 ms
|
spin | 2 |
nuclear quadrupole moment | |
time of discovery or invention | 1979 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 44% |
2n (2-neutron emission) |
mass number | 151 |
---|---|
neutron number | 96 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 59 ± 19 ms
|
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1979 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | |
2n (2-neutron emission) |
mass number | 152 |
---|---|
neutron number | 97 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | |
nuclear quadrupole moment | |
time of discovery or invention | 1987 |
parity |
decay mode | intensity |
---|---|
β− (β− decay) | |
β− n (β−-delayed neutron emission) |
discoverer or inventor | Gustov Kirchoff, Robert Bunsen |
---|---|
location of discovery | Germany |
time of discovery or invention | 1860 |
etimoloġija | Latin: coesius (sky blue); for the blue lines of its spectrum. |
pronunciation | SEE-zi-em (Ingliż) |
Abundance | |
---|---|
Abundance in Earth's crust | |
natural abundance (ocean) | |
natural abundance (human body) | 0.000002 %
|
natural abundance (meteoroid) | 0.000014 %
|
natural abundance (Xemx) | 0.0000008 %
|
Abundance in Universe | 0.00000008 %
|
1 | s | 1.0957 |
2 | p | 4.1804 |
2 | s | 14.4884 |
3 | d | 14.0194 |
3 | p | 18.4222 |
3 | s | 18.6226 |
4 | d | 32.1616 |
4 | p | 29.1424 |
4 | s | 27.9576 |
5 | p | 41.349 |
5 | s | 39.5555 |
6 | s | 48.637 |