Oxygen

Oxygen (O)

elfen gemegol gyda'r symbol O a'i rhifau atomig yn 8
Atomic Number8
Atomic Weight15.999
Rhif màs16
Group16
Period2
Blockp
Proton8 p+
Niwtron8 n0
Electron8 e-
Animated Bohr model of O (Oxygen)

Nodwedd Ffisegol

Atomic Radius
60 pm
molar volume
covalent radius
63 pm
Metallic Radius
ionic radius
135 pm
Crystal Radius
121 pm
Van der Waals radius
152 pm
density
0.001308 g/cm³
Atomic Radii Of The Elements: Oxygen0102030405060708090100110120130140150160pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
485.2 kJ/mol
electron affinity
1.4611135 eV/particle
ionization energy
13.618054 eV/particle
ionization energy of O (Oxygen)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
249.229 kJ/mol
Electron
plisgyn yr electron2, 6
Bohr model: O (Oxygen)
valence electron6
Lewis structure: O (Oxygen)
trefn yr electronnau[He] 2s2 2p4
1s2 2s2 2p4
Enhanced Bohr model of O (Oxygen)
Orbital Diagram of O (Oxygen)
Cyflwr ocsidiad-2, -1, 0, 1, 2
Electronegatifedd
3.44
Electrophilicity Index
2.337978174823841 eV/particle
cyflwr sylfaenol mater
cyflwr materGas
gaseous state of matterDiatomic
Boiling Point
90.188 K
Melting Point
54.36 K
critical pressure
5.043 MPa
critical temperature
154.581 K
triple point
54.3584 K
0.1463 kPa
appearance
lliw
Colorless
appearance
Mynegrif plygiant
1.000271
nodwedd ffisegol gwrthrych
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
dargludedd trydanol
Gwrthedd
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
strwythur
Crystal StructureBase Centered Monoclinic (CUB)
lattice constant
6.83 Å
Lattice Anglesπ/2, 2.313085, π/2
nodwedd mecanyddol deunyddiau
hardness
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

Rhif màs11
neutron number3
relative atomic mass
11.051249828 ± 0.000064453 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
198 ± 12 ys
spin3/2
nuclear quadrupole moment
dyddiad darganfod2019
parity-

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

12O

Rhif màs12
neutron number4
relative atomic mass
12.034367726 ± 0.000012882 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.9 ± 3.3 zs
spin0
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

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

13O

Rhif màs13
neutron number5
relative atomic mass
13.024815435 ± 0.000010226 Da
g-factor
0.92613333333333 ± 0.0002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.58 ± 0.05 ms
spin3/2
nuclear quadrupole moment
0.0111 ± 0.0008
dyddiad darganfod1963
parity-

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

14O

Rhif màs14
neutron number6
relative atomic mass
14.008596706 ± 0.000000027 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
70.621 ± 0.011 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1949
parity+

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

15O

Rhif màs15
neutron number7
relative atomic mass
15.003065636 ± 0.000000526 Da
g-factor
1.43816 ± 0.00024
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
122.266 ± 0.043 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1934
parity-

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

16O

Rhif màs16
neutron number8
relative atomic mass
15.99491461926 ± 0.00000000032 Da
g-factor
0
natural abundance
99.757 ± 0.011
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1919
parity+

17O

Rhif màs17
neutron number9
relative atomic mass
16.99913175595 ± 0.00000000069 Da
g-factor
-0.7574172 ± 0.000004
natural abundance
0.03835 ± 0.00096
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
dyddiad darganfod1925
parity+

18O

Rhif màs18
neutron number10
relative atomic mass
17.99915961214 ± 0.00000000069 Da
g-factor
0
natural abundance
0.2045 ± 0.0102
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1929
parity+

19O

Rhif màs19
neutron number11
relative atomic mass
19.003577969 ± 0.00000283 Da
g-factor
0.612952 ± 0.000028
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
26.47 ± 0.006 s
spin5/2
nuclear quadrupole moment
0.00362 ± 0.00013
dyddiad darganfod1936
parity+

decay modeintensity
β (β decay)100%

20O

Rhif màs20
neutron number12
relative atomic mass
20.004075357 ± 0.00000095 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
13.51 ± 0.05 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1959
parity+

decay modeintensity
β (β decay)100%

21O

Rhif màs21
neutron number13
relative atomic mass
21.008654948 ± 0.000012882 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.42 ± 0.1 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1968
parity+

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

22O

Rhif màs22
neutron number14
relative atomic mass
22.009965744 ± 0.000061107 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.25 ± 0.09 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1969
parity+

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

23O

Rhif màs23
neutron number15
relative atomic mass
23.015696686 ± 0.000130663 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
97 ± 8 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1970
parity+

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

24O

Rhif màs24
neutron number16
relative atomic mass
24.019861 ± 0.000177 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
77.4 ± 4.5 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1970
parity+

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

25O

Rhif màs25
neutron number17
relative atomic mass
25.029338919 ± 0.000177225 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.18 ± 0.35 zs
spin3/2
nuclear quadrupole moment
dyddiad darganfod2008
parity+

decay modeintensity
n (neutron emission)100%

26O

Rhif màs26
neutron number18
relative atomic mass
26.037210155 ± 0.000177081 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.2 ± 3.3 ps
spin0
nuclear quadrupole moment
0
dyddiad darganfod2012
parity+

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

27O

Rhif màs27
neutron number19
relative atomic mass
27.047955 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod
parity+

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

28O

Rhif màs28
neutron number20
relative atomic mass
28.05591 ± 0.00075 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod
parity+

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

hanes

darganfyddwr neu ddyfeisiwrJoseph Priestly, Carl Wilhelm Scheele
man darganfodEngland/Sweden
dyddiad darganfod1774
geirdarddiadGreek: oxys and genes, (acid former).
ynganiadOK-si-jen (Saesneg)

source

Abundance
Abundance in Earth's crust
461,000 mg/kg
natural abundance (cefnfor)
857,000 mg/L
natural abundance (corff dynol)
61 %
natural abundance (Awyrfaen)
40 %
natural abundance (Haul)
0.9 %
Abundance in Universe
1 %

Nuclear Screening Constants

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