Oxigèn

Oxigèn (O)

chemical element, symbol O and atomic number 8
Atomic Number8
Atomic Weight15.999
mass number16
Group16
Period2
Blockp
proton8 p+
neutron8 n0
electron8 e-
Animated Bohr model of O (Oxigèn)

Proprietat Fisica

Rai Atomic
60 pm
molar volume
covalent radius
63 pm
Metallic Radius
ionic radius
135 pm
Crystal Radius
121 pm
Rai de van der Waals
152 pm
densitat
0.001308 g/cm³
Atomic Radii Of The Elements: Oxigèn0102030405060708090100110120130140150160pmRai AtomicCovalent RadiusMetallic RadiusRai de van der Waals

Chemical Property

energia
proton affinity
485.2 kJ/mol
electron affinity
1.4611135 eV/particle
ionization energy
13.618054 eV/particle
ionization energy of O (Oxigèn)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
249.229 kJ/mol
electron
electron shell2, 6
Bohr model: O (Oxigèn)
valence electron6
Lewis structure: O (Oxigèn)
electron configuration[He] 2s2 2p4
1s2 2s2 2p4
Enhanced Bohr model of O (Oxigèn)
Orbital Diagram of O (Oxigèn)
oxidation number-2, -1, 0, 1, 2
Electronegativitat
3.44
Electrophilicity Index
2.337978174823841 eV/particle
fundamental state of matter
estat de la matèriaGas
gaseous state of matterDiatomic
Boiling Point
90.188 K
Melting Point
54.36 K
critical pressure
5.043 MPa
critical temperature
154.581 K
Ponch triple
54.3584 K
0.1463 kPa
appearance
Color
Colorless
appearance
Indici de refraccion
1.000271
thermodynamic material property
Thermal Conductivity
0.027 W/(m K)
thermal expansion
molar heat capacity
29.378 J/(mol K)
Specific Heat Capacity
0.918 J/(g⋅K)
heat capacity ratio7/5
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.000001335 m³/Kg
magnetic susceptibility (Molar)
0.0000000427184 m³/mol
magnetic susceptibility (Volume)
0.00000190772
magnetic ordering
Curie temperature
Néel temperature
estructura
Crystal StructureBase Centered Monoclinic (CUB)
lattice constant
6.83 Å
Lattice Anglesπ/2, 2.313085, π/2
mechanical property
Duretat
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
317.5 m/s
classification
CategoryOther nonmetals, Nonmetals
CAS GroupVIB
IUPAC GroupVIA
Glawe Number97
Mendeleev Number99
Pettifor Number101
Geochemical Classmajor
Goldschmidt classificationlitophile

other

Gas Basicity
459.6 kJ/mol
polarizability
5.3 ± 0.2 a₀
C6 Dispersion Coefficient
15.6 a₀
allotropeDioxygen, Ozone, Tetraoxygen
Neutron cross section
0.00028
Neutron Mass Absorption
0.000001
quantum number3P2
space group12 (C12/m1)

Isotopes of Oxygen

Stable Isotopes3
Unstable Isotopes15
Natural Isotopes3
Isotopic Composition1699.76%1699.76%170.04%170.04%180.20%180.20%

11O

mass number11
neutron number3
relative atomic mass
11.051249828 ± 0.000064453 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
198 ± 12 ys
Espin3/2
nuclear quadrupole moment
data de descobèrta2019
parity-

decay modeintensity
2p (2-proton emission)100%

12O

mass number12
neutron number4
relative atomic mass
12.034367726 ± 0.000012882 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
8.9 ± 3.3 zs
Espin0
nuclear quadrupole moment
0
data de descobèrta1978
parity+

decay modeintensity
2p (2-proton emission)100%

13O

mass number13
neutron number5
relative atomic mass
13.024815435 ± 0.000010226 Da
g-factor
0.92613333333333 ± 0.0002
natural abundance
Radioactivitat☢️ radioactive element
Semivida
8.58 ± 0.05 ms
Espin3/2
nuclear quadrupole moment
0.0111 ± 0.0008
data de descobèrta1963
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)10.9%

14O

mass number14
neutron number6
relative atomic mass
14.008596706 ± 0.000000027 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
70.621 ± 0.011 s
Espin0
nuclear quadrupole moment
0
data de descobèrta1949
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

15O

mass number15
neutron number7
relative atomic mass
15.003065636 ± 0.000000526 Da
g-factor
1.43816 ± 0.00024
natural abundance
Radioactivitat☢️ radioactive element
Semivida
122.266 ± 0.043 s
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1934
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

16O

mass number16
neutron number8
relative atomic mass
15.99491461926 ± 0.00000000032 Da
g-factor
0
natural abundance
99.757 ± 0.011
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin0
nuclear quadrupole moment
0
data de descobèrta1919
parity+

17O

mass number17
neutron number9
relative atomic mass
16.99913175595 ± 0.00000000069 Da
g-factor
-0.7574172 ± 0.000004
natural abundance
0.03835 ± 0.00096
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin5/2
nuclear quadrupole moment
data de descobèrta1925
parity+

18O

mass number18
neutron number10
relative atomic mass
17.99915961214 ± 0.00000000069 Da
g-factor
0
natural abundance
0.2045 ± 0.0102
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin0
nuclear quadrupole moment
0
data de descobèrta1929
parity+

19O

mass number19
neutron number11
relative atomic mass
19.003577969 ± 0.00000283 Da
g-factor
0.612952 ± 0.000028
natural abundance
Radioactivitat☢️ radioactive element
Semivida
26.47 ± 0.006 s
Espin5/2
nuclear quadrupole moment
0.00362 ± 0.00013
data de descobèrta1936
parity+

decay modeintensity
β (β decay)100%

20O

mass number20
neutron number12
relative atomic mass
20.004075357 ± 0.00000095 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
13.51 ± 0.05 s
Espin0
nuclear quadrupole moment
0
data de descobèrta1959
parity+

decay modeintensity
β (β decay)100%

21O

mass number21
neutron number13
relative atomic mass
21.008654948 ± 0.000012882 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
3.42 ± 0.1 s
Espin5/2
nuclear quadrupole moment
data de descobèrta1968
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

22O

mass number22
neutron number14
relative atomic mass
22.009965744 ± 0.000061107 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
2.25 ± 0.09 s
Espin0
nuclear quadrupole moment
0
data de descobèrta1969
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)22%

23O

mass number23
neutron number15
relative atomic mass
23.015696686 ± 0.000130663 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
97 ± 8 ms
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1970
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)7%

24O

mass number24
neutron number16
relative atomic mass
24.019861 ± 0.000177 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
77.4 ± 4.5 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1970
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)43%

25O

mass number25
neutron number17
relative atomic mass
25.029338919 ± 0.000177225 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
5.18 ± 0.35 zs
Espin3/2
nuclear quadrupole moment
data de descobèrta2008
parity+

decay modeintensity
n (neutron emission)100%

26O

mass number26
neutron number18
relative atomic mass
26.037210155 ± 0.000177081 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
4.2 ± 3.3 ps
Espin0
nuclear quadrupole moment
0
data de descobèrta2012
parity+

decay modeintensity
2n (2-neutron emission)100%

27O

mass number27
neutron number19
relative atomic mass
27.047955 ± 0.000537 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin3/2
nuclear quadrupole moment
data de descobèrta
parity+

decay modeintensity
n (neutron emission)
2n (2-neutron emission)

28O

mass number28
neutron number20
relative atomic mass
28.05591 ± 0.00075 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta
parity+

decay modeintensity
2n (2-neutron emission)
β (β decay)0%
Liquid oxygen in a beaker 4
8 oxygen (O) Bohr model

istòria

descobridor o inventaireJoseph Priestly, Carl Wilhelm Scheele
luòc de descobèrtaEngland/Sweden
data de descobèrta1774
EtimologiaGreek: oxys and genes, (acid former).
pronunciationOK-si-jen (English)

source

Abundance
Abundance in Earth's crust
461000 mg/kg
natural abundance (Ocean)
857000 mg/L
natural abundance (còs uman)
61 %
natural abundance (meteoroid)
40 %
natural abundance (Solelh)
0.9 %
Abundance in Universe
1 %

Nuclear Screening Constants

1s0.3421
2p3.5468
2s3.5084