Atomic Number | 18 |
---|---|
Atomic Weight | 39.948 |
mass number | 40 |
Group | 18 |
---|---|
Period | 3 |
Block | p |
پروتون | 18 p+ |
---|---|
neutron | 22 n0 |
ئېلېكترون | 18 e- |
Atomic Radius | |
---|---|
molar volume | |
covalent radius | |
Metallic Radius | |
ionic radius | |
Crystal Radius | |
Van der Waals radius | |
density |
ئېنېرگىيە | |
---|---|
proton affinity | |
electron affinity | |
ionization energy | |
enthalpy of vaporization | |
enthalpy of fusion | |
standard enthalpy of formation | |
ئېلېكترون | |
ئېلېكترون قەۋەت | 2, 8, 8 |
valence electron | 8 ⓘ |
electron configuration | [Ne] 3s2 3p6ⓘ 1s2 2s2 2p6 3s2 3p6 |
oxidation number | 0 |
electronegativity | |
Electrophilicity Index | |
fundamental state of matter | |
phase of matter | Gas |
gaseous state of matter | Monoatomic |
Boiling Point | |
Melting Point | |
critical pressure | |
critical temperature | |
triple point | |
appearance | |
color | Colorless
|
appearance | colorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field |
refractive index | 1.000281
|
thermodynamic material property | |
Thermal Conductivity | |
thermal expansion | |
molar heat capacity | |
Specific Heat Capacity | |
heat capacity ratio | 5/3 |
electrical properties | |
type | |
electrical conductivity | |
electrical resistivity | |
superconductivity | |
magnetism | |
type | diamagnetic |
magnetic susceptibility (Mass) | -0.000000006 m³/Kg
|
magnetic susceptibility (Molar) | -0.00000000024 m³/mol
|
magnetic susceptibility (Volume) | -0.0000000107
|
magnetic ordering | |
Curie temperature | |
Néel temperature | |
structure | |
Crystal Structure | Face Centered Cubic (FCC) |
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 | Noble gases, Noble gases |
CAS Group | VIII |
IUPAC Group | VIIIA |
Glawe Number | 3 |
Mendeleev Number | 114 |
Pettifor Number | 3 |
Geochemical Class | volatile |
Goldschmidt classification | atmophile |
Gas Basicity | |
---|---|
polarizability | |
C6 Dispersion Coefficient | |
allotrope | |
Neutron cross section | 0.66
|
Neutron Mass Absorption | 0.00059
|
quantum number | 1S0 |
space group | 225 (Fm_3m) |
Stable Isotopes | 2 |
---|---|
Unstable Isotopes | 24 |
Natural Isotopes | 3 |
mass number | 29 |
---|---|
neutron number | 11 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 5/2 |
nuclear quadrupole moment | |
time of discovery or invention | 2018 |
parity | + |
decay mode | intensity |
---|---|
2p (2-proton emission) | 100% |
mass number | 30 |
---|---|
neutron number | 12 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 2015 |
parity | + |
decay mode | intensity |
---|---|
2p (2-proton emission) | 100% |
mass number | 31 |
---|---|
neutron number | 13 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 15 ± 0.3 ms
|
spin | 5/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1986 |
parity | + |
decay mode | intensity |
---|---|
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% |
mass number | 32 |
---|---|
neutron number | 14 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 98 ± 2 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1977 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 35.58% |
mass number | 33 |
---|---|
neutron number | 15 |
Relative Atomic Mass | |
g-factor | -1.446 ± 0.012
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 173 ± 2 ms
|
spin | 1/2 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1964 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
β+ p (β+-delayed proton emission) | 38.7% |
mass number | 34 |
---|---|
neutron number | 16 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 846.46 ± 0.35 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1966 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 35 |
---|---|
neutron number | 17 |
Relative Atomic Mass | |
g-factor | 0.42133333333333 ± 0.00013333333333333
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.7756 ± 0.001 s
|
spin | 3/2 |
nuclear quadrupole moment | -0.084 ± 0.015
|
time of discovery or invention | 1940 |
parity | + |
decay mode | intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
mass number | 36 |
---|---|
neutron number | 18 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 0.3336 ± 0.021
|
radioactivity | ☢️ radioactive element |
half-life | |
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1920 |
parity | + |
decay mode | intensity |
---|---|
2β+ (double β+ decay) |
mass number | 37 |
---|---|
neutron number | 19 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 35.011 ± 0.019 d
|
spin | 3/2 |
nuclear quadrupole moment | 0.076 ± 0.003
|
time of discovery or invention | 1941 |
parity | + |
decay mode | intensity |
---|---|
ϵ (electron capture) | 100% |
mass number | 38 |
---|---|
neutron number | 20 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 0.0629 ± 0.007
|
radioactivity | stable isotope |
half-life | Not Radioactive ☢️ |
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1934 |
parity | + |
mass number | 39 |
---|---|
neutron number | 21 |
Relative Atomic Mass | |
g-factor | -0.45428571428571 ± 0.0042857142857143
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 268 ± 8 y
|
spin | 7/2 |
nuclear quadrupole moment | -0.116 ± 0.002
|
time of discovery or invention | 1950 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 40 |
---|---|
neutron number | 22 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | 99.6035 ± 0.025
|
radioactivity | stable isotope |
half-life | Not Radioactive ☢️ |
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1920 |
parity | + |
mass number | 41 |
---|---|
neutron number | 23 |
Relative Atomic Mass | |
g-factor | -0.37428571428571 ± 0.0022857142857143
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 109.61 ± 0.04 m
|
spin | 7/2 |
nuclear quadrupole moment | -0.042 ± 0.004
|
time of discovery or invention | 1936 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 42 |
---|---|
neutron number | 24 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 32.9 ± 1.1 y
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1952 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 43 |
---|---|
neutron number | 25 |
Relative Atomic Mass | |
g-factor | -0.4088 ± 0.0024
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 5.37 ± 0.06 m
|
spin | 5/2 |
nuclear quadrupole moment | 0.142 ± 0.014
|
time of discovery or invention | 1969 |
parity |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 44 |
---|---|
neutron number | 26 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 11.87 ± 0.05 m
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1969 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 45 |
---|---|
neutron number | 27 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 21.48 ± 0.15 s
|
spin | 5/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1974 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 46 |
---|---|
neutron number | 28 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 8.4 ± 0.6 s
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1974 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
mass number | 47 |
---|---|
neutron number | 29 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 1.23 ± 0.03 s
|
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1985 |
parity |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 0.2% |
mass number | 48 |
---|---|
neutron number | 30 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 415 ± 15 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 2004 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 38% |
mass number | 49 |
---|---|
neutron number | 31 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 236 ± 8 ms
|
spin | 3/2 |
nuclear quadrupole moment | |
time of discovery or invention | 1989 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 29% |
2n (2-neutron emission) |
mass number | 50 |
---|---|
neutron number | 32 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | 106 ± 6 ms
|
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1989 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | 100% |
β− n (β−-delayed neutron emission) | 37% |
2n (2-neutron emission) |
mass number | 51 |
---|---|
neutron number | 33 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 1/2 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 1989 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | |
β− n (β−-delayed neutron emission) | |
2n (2-neutron emission) |
mass number | 52 |
---|---|
neutron number | 34 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 2009 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | |
β− n (β−-delayed neutron emission) | |
2n (2-neutron emission) |
mass number | 53 |
---|---|
neutron number | 35 |
Relative Atomic Mass | |
g-factor | |
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 5/2 |
nuclear quadrupole moment | |
time of discovery or invention | 2009 |
parity | - |
decay mode | intensity |
---|---|
β− (β− decay) | |
β− n (β−-delayed neutron emission) | |
2n (2-neutron emission) |
mass number | 54 |
---|---|
neutron number | 36 |
Relative Atomic Mass | |
g-factor | 0
|
natural abundance | |
radioactivity | ☢️ radioactive element |
half-life | |
spin | 0 |
nuclear quadrupole moment | 0
|
time of discovery or invention | 2018 |
parity | + |
decay mode | intensity |
---|---|
β− (β− decay) | |
β− n (β−-delayed neutron emission) | |
2n (2-neutron emission) |
discoverer or inventor | Sir William Ramsey, Baron Rayleigh |
---|---|
location of discovery | Scotland |
time of discovery or invention | 1894 |
etymology | Greek: argos (inactive). |
pronunciation | AR-gon (ئىنگلىزچە) |
1 | s | 0.4925 |
2 | p | 3.9918 |
2 | s | 5.7696 |
3 | p | 11.2359 |
3 | s | 10.2432 |