Atomnummer | 18 |
---|---|
Atommassa | 39.948 |
masstal | 40 |
Grupp | 18 |
---|---|
Period | 3 |
Block | p |
Protoner | 18 p+ |
---|---|
Neutroner | 22 n0 |
Electrons | 18 e- |
fysisk egenskap | |
---|---|
atomradie | 71 pm
|
molvolym | 24,2 cm³/mol
|
kovalent radie | 96 pm
|
Metallic Radius | |
ionic radius | |
Crystal Radius | |
Van der Waalsradie |
188 pm
|
densitet | 0,001633 g/cm³
|
energi | |
proton affinity | 369,2 kJ/mol
|
Elektronaffinitet | −11,5 eV/particle
|
joniseringsenergi | 15,7596112 eV/particle
|
ångbildningsvärme | 6,52 kJ/mol
|
smältvärme | |
Bildningsentalpi | |
Electrons | |
electron shell | 2, 8, 8 |
valenselektron | 8 |
elektronkonfiguration | [Ne] 3s2 3p6 |
oxidationstal | 0 |
elektronegativitet | |
Electrophilicity | 0,0832013314590371 eV/particle
|
Phases | |
aggregationstillstånd | Gasformig |
Gas Phase | Monoatomic |
Kokpunkt | 87,302 K
|
Smältpunkt | 83,81 K
|
critical pressure | 4,863 MPa
|
critical temperature | 150,687 K
|
trippelpunkt | |
Visual | |
färg | Färglös
|
appearance | colorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field |
Brytningsindex | 1,000281
|
materialegenskap | |
Värmeledningsförmåga | 0,0177 W/(m K)
|
termisk expansion | |
molar heat capacity | 20,786 J/(mol K)
|
Specifik värmekapacitet | 0,52 J/(g⋅K)
|
heat capacity ratio | 5/3 |
electrical properties | |
type | |
elektrisk konduktivitet | |
resistivitet | |
supraledare | |
magnetism | |
type | diamagnetic |
magnetisk susceptibilitet (Mass) | −0,000000006 m³/Kg
|
magnetisk susceptibilitet (Molar) | −0,00000000024 m³/mol
|
magnetisk susceptibilitet (Volume) | −0,0000000107
|
magnetic ordering | |
Curiepunkten | |
Néel temperature | |
Structure | |
Kristallstruktur | Ytcentrerat kubiskt (FCC) |
Gitterkonstant | 5,26 Å
|
Lattice Angles | π/2, π/2, π/2 |
mekanisk materialegenskap | |
hårdhet | |
Kompressibilitet | |
skjuvmodul | |
Young's modulus | |
Poissons konstant | |
ljudhastighet | 319 m/s
|
klassificering | |
Kategori | Ädelgaser, Noble gases |
CAS Group | VIII |
IUPAC Group | VIIIA |
Glawe Number | 3 |
Mendeleev Number | 114 |
Pettifor Number | 3 |
Geochemical Class | volatile |
Goldschmidt classification | atmophile |
övrigt | |
Gas Basicity | 346,3 kJ/mol
|
Dipole Polarizability | |
C6 Dispersion Coefficient | 64,2 a₀
|
Allotropes | |
Träffyta | 0,66
|
Neutron Mass Absorption | 0,00059
|
kvanttal | 1S0 |
rymdgrupp | 225 (Fm_3m) |
Stabila isotoper | 3 |
---|---|
Instabila isotoper | 23 |
Radioactive Isotopes | 22 |
natural abundance | |
---|---|
relative atomic mass | |
masstal | 29 |
g-factor | |
Halveringstid | |
Spinn | 5/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 2018 |
Paritet | + |
decay mode | Intensitet |
---|---|
2p (2-proton emission) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 30 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 2015 |
Paritet | + |
decay mode | Intensitet |
---|---|
2p (2-proton emission) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 31 |
g-factor | |
Halveringstid | 15 ± 0,3 ms
|
Spinn | 5/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1986 |
Paritet | + |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 68.3% |
2p (2-proton emission) | 9% |
B+pA | 0.38% |
3p | 0.07% |
β+α (β+-delayed α emission) | 0.03% |
2p (2-proton emission) | 0.0006% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 32 |
g-factor | 0
|
Halveringstid | 98 ± 2 ms
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1977 |
Paritet | + |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 35.58% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 33 |
g-factor | −1,446 ± 0,012
|
Halveringstid | 173 ± 2 ms
|
Spinn | 1/2 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1964 |
Paritet | + |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 38.7% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 34 |
g-factor | 0
|
Halveringstid | 846,46 ± 0,35 ms
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1966 |
Paritet | + |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 35 |
g-factor | 0,42133333333333 ± 0,00013333333333333
|
Halveringstid | 1,7756 ± 0,001 s
|
Spinn | 3/2 |
nuclear quadrupole moment | −0,084 ± 0,015
|
upptäcktsdatum | 1940 |
Paritet | + |
decay mode | Intensitet |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
natural abundance | 0,3336 ± 0,021
|
---|---|
relative atomic mass | |
masstal | 36 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1920 |
Paritet | + |
decay mode | Intensitet |
---|---|
2β+ (double β+ decay) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 37 |
g-factor | |
Halveringstid | 35,011 ± 0,019 d
|
Spinn | 3/2 |
nuclear quadrupole moment | 0,076 ± 0,003
|
upptäcktsdatum | 1941 |
Paritet | + |
decay mode | Intensitet |
---|---|
ϵ (electron capture) | 100% |
natural abundance | 0,0629 ± 0,007
|
---|---|
relative atomic mass | |
masstal | 38 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1934 |
Paritet | + |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 39 |
g-factor | −0,45428571428571 ± 0,0042857142857143
|
Halveringstid | 268 ± 8 y
|
Spinn | 7/2 |
nuclear quadrupole moment | −0,116 ± 0,002
|
upptäcktsdatum | 1950 |
Paritet | - |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | 99,6035 ± 0,025
|
---|---|
relative atomic mass | |
masstal | 40 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1920 |
Paritet | + |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 41 |
g-factor | −0,37428571428571 ± 0,0022857142857143
|
Halveringstid | 109,61 ± 0,04 m
|
Spinn | 7/2 |
nuclear quadrupole moment | −0,042 ± 0,004
|
upptäcktsdatum | 1936 |
Paritet | - |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 42 |
g-factor | 0
|
Halveringstid | 32,9 ± 1,1 y
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1952 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 43 |
g-factor | −0,4088 ± 0,0024
|
Halveringstid | 5,37 ± 0,06 m
|
Spinn | 5/2 |
nuclear quadrupole moment | 0,142 ± 0,014
|
upptäcktsdatum | 1969 |
Paritet |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 44 |
g-factor | 0
|
Halveringstid | 11,87 ± 0,05 m
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1969 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 45 |
g-factor | |
Halveringstid | 21,48 ± 0,15 s
|
Spinn | 5/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1974 |
Paritet | - |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 46 |
g-factor | 0
|
Halveringstid | 8,4 ± 0,6 s
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1974 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 47 |
g-factor | |
Halveringstid | 1,23 ± 0,03 s
|
Spinn | 3/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1985 |
Paritet |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 0.2% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 48 |
g-factor | 0
|
Halveringstid | 415 ± 15 ms
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 2004 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 38% |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 49 |
g-factor | |
Halveringstid | 236 ± 8 ms
|
Spinn | 3/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 1989 |
Paritet | - |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 29% |
2n (2-neutron emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 50 |
g-factor | 0
|
Halveringstid | 106 ± 6 ms
|
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1989 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 37% |
2n (2-neutron emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 51 |
g-factor | |
Halveringstid | |
Spinn | 1/2 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 1989 |
Paritet | - |
decay mode | Intensitet |
---|---|
β− (β− decay) | % |
β− n (β−-delayed neutron emission) | % |
2n (2-neutron emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 52 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 2009 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | % |
β− n (β−-delayed neutron emission) | % |
2n (2-neutron emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 53 |
g-factor | |
Halveringstid | |
Spinn | 5/2 |
nuclear quadrupole moment | |
upptäcktsdatum | 2009 |
Paritet | - |
decay mode | Intensitet |
---|---|
β− (β− decay) | % |
β− n (β−-delayed neutron emission) | % |
2n (2-neutron emission) | % |
natural abundance | Radioactive ☢️ |
---|---|
relative atomic mass | |
masstal | 54 |
g-factor | 0
|
Halveringstid | |
Spinn | 0 |
nuclear quadrupole moment | 0
|
upptäcktsdatum | 2018 |
Paritet | + |
decay mode | Intensitet |
---|---|
β− (β− decay) | % |
β− n (β−-delayed neutron emission) | % |
2n (2-neutron emission) | % |
upptäckare eller uppfinnare | Sir William Ramsey, Baron Rayleigh |
---|---|
fyndplats | Scotland |
upptäcktsdatum | 1894 |
etymologi | Greek: argos (inactive). |
uttal | AR-gon (engelska) |
1 | s | 0.4925 |
2 | p | 3.9918 |
2 | s | 5.7696 |
3 | p | 11.2359 |
3 | s | 10.2432 |