Oxygen (O)
nonmetalGas
Nguyên tử khối chuẩn
15,999 u [15,99903, 15,99977]Cấu hình electron
[He] 2s2 2p4Nhiệt độ nóng chảy
-218,79 °CNhiệt độ sôi
-182,95 °CKhối lượng riêng
1,429 kg/m³Trạng thái oxi hóa
−2, −1, 0, +1, +2Độ âm điện (Pauling)
3,44Năng lượng ion hóa (lần 1)
13,618055 eVNăm phát hiện
1771Bán kính nguyên tử
60 pmChi tiết
Oxygen is a reactive nonmetal and chalcogen that occurs mainly as the diatomic gas O₂ and, less commonly, as ozone O₃. It is essential to aerobic respiration and is a major constituent of water, silicate minerals, carbonates, and many biological molecules. Its high electronegativity and ability to form strong bonds make oxidation chemistry central to combustion, corrosion, metabolism, and industrial processing.
The gas is colorless, odorless, and tasteless. The liquid and solid forms are a pale blue color and are strongly paramagnetic.
The name derives from the Greek oxys for "acid" and genes for "forming" because the French chemist Antoine-Laurent Lavoisier once thought that oxygen was integral to all acids.
Oxygen was discovered independently by the Swedish pharmacist and chemist Carl-Wilhelm Scheele in 1771, and the English clergyman and chemist Joseph Priestley in 1774. Scheele's Chemical Treatise on Air and Fire was delayed in publication until 1777, so Priestley is credited with the discovery because he published first.
Oxygen had been produced by several chemists prior to its discovery in 1774, but they failed to recognize it as a distinct element. Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen, but Priestly is usually given credit for the discovery. They were both able to produce oxygen by heating mercuric oxide (HgO). Priestley called the gas produced in his experiments 'dephlogisticated air' and Scheele called his 'fire air'. The name oxygen was created by Antoine Lavoisier who incorrectly believed that oxygen was necessary to form all acids. Oxygen is the third most abundant element in the universe and makes up nearly 21% of the earth's atmosphere. Oxygen accounts for nearly half of the mass of the earth's crust, two thirds of the mass of the human body and nine tenths of the mass of water. Large amounts of oxygen can be extracted from liquefied air through a process known as fractional distillation. Oxygen can also be produced through the electrolysis of water or by heating potassium chlorate (KClO3).
From the Greek word oxys, acid, and genes, forming. The behavior of oxygen and nitrogen as components of air led to the advancement of the phlogiston theory of combustion, which captured the minds of chemists for a century.
Joseph Priestley is generally credited with its discovery, although Scheele also discovered it independently.
Its atomic weight was used as a standard of comparison for each of the other elements until 1961 when the International Union of Pure and Applied Chemistry adopted carbon 12 as the new basis.
At ordinary temperature and pressure, pure O₂ is a colorless, odorless gas. Liquid oxygen is pale blue and strongly paramagnetic. Solid oxygen is also blue at low temperature and has several pressure- and temperature-dependent phases.
Elemental O₂ is used in steelmaking, nonferrous metal refining, welding and cutting, chemical oxidation, wastewater treatment, pulp bleaching, and medical and emergency breathing systems. Liquid oxygen is a major oxidizer in rocketry. Enriched oxygen improves combustion efficiency in some furnaces. Ozone O₃ is used as a strong oxidant for water treatment, odor control, and selected chemical processes, but it must be generated near the point of use because it decomposes readily.
Oxygen is a highly reactive element and is capable of combining with most other elements. It is required by most living organisms and for most forms of combustion. Impurities in molten pig iron are burned away with streams of high pressure oxygen to produce steel. Oxygen can also be combined with acetylene (C2H2) to produce an extremely hot flame used for welding. Liquid oxygen, when combined with liquid hydrogen, makes an excellent rocket fuel. Ozone (O3) forms a thin, protective layer around the earth that shields the surface from the sun's ultraviolet radiation. Oxygen is also a component of hundreds of thousands of organic compounds.
Plants and animals rely on oxygen for respiration. Hospitals frequently prescribe oxygen for patients with respiratory ailments.
Isotopes in Earth/Planetary Science
Molecules, atoms, and ions of the stable isotopes of oxygen possess slightly different physical and chemical properties, and they commonly will be fractionated during physical, chemical, and biological processes, giving rise to variations in isotopic abundances and in atomic weights. There are substantial variations in the isotopic abundances of oxygen in natural terrestrial materials (Fig. IUPAC.8.1). These variations are useful in investigating the origin of substances and studying environmental, hydrological, and geological processes [13] M. W. Wieser, T. B. Coplen. Pure Appl Chem.83, 359 (2011)..
A primary use of stable oxygen isotopes is in isotope hydrology. Although the evolution of the stable hydrogen and oxygen isotopic composition of precipitation begins with the evaporation of water from the oceans, their local and global relationship arises primarily from equilibrium isotopic fractionation of heavier (2H and 18O) and lighter isotopes (1H and 16O) of hydrogen and oxygen during condensation as a tropospheric vapor mass follows a trajectory to higher latitudes and over continents [14] W. Dansgaard. Tellus16, 436 (1964)., [15] I. D. Clark, P. Fritz. Environmental Isotopes in Hydrogeology, p. 328, Lewis Publishers, New York (1997).. As a consequence, the isotopic composition and atomic weight of oxygen in precipitation, rivers, and tap waters varies with elevation, season, and distance from the ocean-continent boundary. Figure 4.8.2 shows the variation in stable oxygen isotopic composition of water from rivers across the United States. These variations in oxygen isotopic composition of environmental water are often combined with hydrogen isotopic compositions and have been used to identify the origin of water and to investigate the interaction between groundwater and surface water (e.g. lakes, streams, and rivers) [16] C. Kendall, T. B. Coplen. Hydrol. Processes.15, 1363 (2011)..
Isotopes in Forensic Science and Anthropology
Measurements of relative 18O abundances have been used to determine the breeding grounds of many species of migrant songbirds. These species of songbirds only grow their feathers before migration, and they grow them on or close to their breeding grounds. Therefore, the isotopic composition of a bird’s feathers correlates to the isotopic signature of the growing season’s precipitation [19] K. A. Hobson. Oecologia120, 314 (1999)., [20] K. A. Hobson, L. I. Wassenaar. Oecologia.109, 142 (1996)..
Measurements of relative 18O abundances of human hair or nail samples collected at archeological sites have been used to determine the geographic region in which a subject lived based on the oxygen isotopic composition of the water they drank (Fig. IUPAC.8.3). This is possible because hair stores a daily record of oxygen isotopic composition of intake water, which correlates to local meteoric water [92] D. M. O’Brien, M. J. Woller. Rapid Commun. Mass Spectrom.21, 2422 (2007)..
Isotopes in Medicine
16O is used to produce radioactive 13N via the 16O (p, 4He) 13N reaction for imaging in positron emission tomography (PET) and to study blood flow through the heart (myocardial perfusion) [94] International Atomic Energy Agency. Cyclotron Produced Radionuclides: Physical Characteristics and Production Methods, Technical Reports Series No. 468. International Atomic Energy Agency Vienna (2009)., [95] M. Sajjad, R. M. Lambrecht, A. P. Wolf. Radiochim. Acta39, 165 (1986)..
17O has been used as a tracer to study cerebral oxygen utilization [96] T. Arai, S. Nakao, K. Mori, K. Ishimori, I. Morishima, T. Miyazawa, B. Fritz-Zieroth. Rapid Commun. Mass Spectrom.169, 153 (1990).. Variations in stable oxygen and hydrogen isotopes are used in energy expenditure studies in animals and humans. The subject is administered a dose of doubly labeled water (water enriched in both 2H and 18O). Measurements of the elimination rates of 2H and 18O in the subject over time through regular sampling of body water (by sampling saliva, urine, or blood) provide information on energy expenditure because the hydrogen isotopic composition of body water is affected primarily by water loss (mainly urination), but the oxygen isotopic composition is affected by both respiration and water loss [97] J. R. Speakman. Theory and Practice, Doubly Labelled Water. Springer Scientific, London (1997)..
Oxygen commonly has oxidation state −2 in oxides and silicates, −1 in peroxides such as hydrogen peroxide H₂O₂, and −1/2 in superoxides such as potassium superoxide KO₂. In water H₂O it forms extensive hydrogen-bonded networks. Oxygen also forms carbon dioxide CO₂, sulfur dioxide SO₂, nitrates, phosphates, carbonates, and many organic functional groups. Positive oxidation states occur only with more electronegative fluorine, as in oxygen difluoride OF₂.
Ozone (O3), a highly active compound, is formed by the action of an electrical discharge or ultraviolet light on oxygen.
Ozone's presence in the atmosphere (amounting to the equivalent of a layer 3 mm thick under ordinary pressures and temperatures) helps prevent harmful ultraviolet rays of the sun from reaching the earth's surface. Pollutants in the atmosphere may have a detrimental effect on this ozone layer. Ozone is toxic and exposure should not exceed 0.2 mg/m# (8-hour time-weighted average - 40-hour work week). Undiluted ozone has a bluish color. Liquid ozone is bluish black and solid ozone is violet-black.
Oxygen, which is very reactive, is a component of hundreds of thousands of organic compounds and combines with most elements.
See more information at the Oxygen compound page.
O₂ is not flammable, but oxygen enrichment greatly increases the speed and severity of fires and can cause materials that normally burn slowly to ignite violently. Liquid oxygen can cause severe cold burns and can make porous materials dangerously oxygen-rich. Ozone O₃ is toxic by inhalation and irritates the respiratory tract. High partial pressures of oxygen can be harmful, especially in diving, hyperbaric, and intensive-care settings.
Oxygen cycles through photosynthesis, respiration, weathering, combustion, and exchange between the atmosphere and oceans. Most atmospheric O₂ is maintained by oxygenic photosynthesis, while much of Earth’s oxygen inventory is locked in rocks as oxides, silicates, and carbonates. Dissolved oxygen controls the habitability of waters for many organisms and is depleted by decay of organic matter and some pollution events.
Industrial oxygen is produced mainly by cryogenic fractional distillation of air where large volumes and high purity are required. Pressure-swing adsorption and membrane systems supply smaller or on-site needs at lower purities. Demand is tied to steel, chemicals, refining, healthcare, water treatment, and aerospace. Because air is the feedstock, cost is dominated by energy, plant scale, purity, transport, and storage rather than geological scarcity. Oxygen itself is not recycled as a commodity, although efficient process design reduces consumption.
Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, the process once thought to give the sun and stars their energy. Oxygen under excited conditions is responsible for the bright red and yellow-green colors of the Aurora Borealis.
A gaseous element, oxygen forms 21% of the atmosphere by volume and is obtained by liquefaction and fractional distillation. The atmosphere of Mars contains about 0.15% oxygen. The element and its compounds make up 49.2%, by weight, of the earth's crust. About two thirds of the human body and nine tenths of water is oxygen.
In the laboratory it can be prepared by the electrolysis of water or by heating potassium chlorate with manganese dioxide as a catalyst.
Oxygen is one of the most abundant elements in the universe and is made chiefly by helium and carbon burning in massive stars, then dispersed by stellar winds and supernovae. It is common in planets, dust, ices, and rocky minerals. In the Solar System it is a major component of water ice, silicate rock, carbon dioxide ice or gas, and many metal oxides.
- Liquid oxygen is attracted to a magnet strongly enough to be visibly held between magnet poles.
- Ozone in the stratosphere absorbs much biologically damaging ultraviolet radiation.
- Most oxygen atoms on Earth are in minerals, not in the atmosphere.
- The name oxygen originally reflected the mistaken idea that it was required to make all acids.
- Singlet oxygen is an electronically excited form important in photochemistry and some biological damage.
- Hemoglobin binds O₂ reversibly through iron centers rather than by oxidizing iron completely.
Hình ảnh
Tính chất
Vật lý
- Bán kính nguyên tử (thực nghiệm)
- 60 pm So sánh Bán kính nguyên tử (thực nghiệm) của tất cả nguyên tố →
- Bán kính cộng hóa trị
- 66 pm So sánh Bán kính cộng hóa trị của tất cả nguyên tố →
- Bán kính van der Waals
- 152 pm So sánh Bán kính van der Waals của tất cả nguyên tố →
- Khối lượng riêng
- 1,429 kg/m³ So sánh Khối lượng riêng của tất cả nguyên tố →
- Thể tích mol
- 0,014 L/mol
- Pha ở STP
- Khí So sánh Pha ở STP của tất cả nguyên tố →
- Nhiệt độ nóng chảy
- -218,79 °C So sánh Nhiệt độ nóng chảy của tất cả nguyên tố →
- Nhiệt độ sôi
- -182,95 °C So sánh Nhiệt độ sôi của tất cả nguyên tố →
- Độ dẫn nhiệt
- 0,027 W/(m·K) So sánh Độ dẫn nhiệt của tất cả nguyên tố →
- Nhiệt dung riêng
- 0,918 J/(g·K) So sánh Nhiệt dung riêng của tất cả nguyên tố →
- Nhiệt dung mol
- 29,378 J/(mol·K) So sánh Nhiệt dung mol của tất cả nguyên tố →
- Cấu trúc tinh thể
- Lập phương So sánh Cấu trúc tinh thể của tất cả nguyên tố →
Hóa học
- Độ âm điện (Pauling)
- 3,44 So sánh Độ âm điện (Pauling) của tất cả nguyên tố →
- Độ âm điện (Allen)
- 3,61
- Ái lực electron
- 1,4611 eV
- Năng lượng ion hóa (lần 1)
- 13,618055 eV So sánh Năng lượng ion hóa (lần 1) của tất cả nguyên tố →
- Năng lượng ion hóa (lần 2)
- 35,121241 eV So sánh Năng lượng ion hóa (lần 2) của tất cả nguyên tố →
- Năng lượng ion hóa (lần 3)
- 54,935729 eV So sánh Năng lượng ion hóa (lần 3) của tất cả nguyên tố →
- Năng lượng ion hóa (lần 4)
- 77,413766 eV So sánh Năng lượng ion hóa (lần 4) của tất cả nguyên tố →
- Năng lượng ion hóa (lần 5)
- 113,899392 eV So sánh Năng lượng ion hóa (lần 5) của tất cả nguyên tố →
- Trạng thái oxi hóa
- −2, −1, 0, +1, +2 So sánh Trạng thái oxi hóa của tất cả nguyên tố →
- Electron hóa trị
- 6 So sánh Electron hóa trị của tất cả nguyên tố →
- Cấu hình electron
- [He] 2s2 2p4
Nhiệt động lực học
- Điểm ba (nhiệt độ)
- -218,7916 °C
- Điểm ba (áp suất)
- 146,3 Pa
- Điểm tới hạn (nhiệt độ)
- -118,569 °C
- Điểm tới hạn (áp suất)
- 5,043e+6 Pa
- Nhiệt nóng chảy
- 0,00460175 eV So sánh Nhiệt nóng chảy của tất cả nguyên tố →
- Nhiệt hóa hơi
- 0,07068456 eV So sánh Nhiệt hóa hơi của tất cả nguyên tố →
- Nhiệt nguyên tử hóa
- 2,582474 eV
- Enthalpy nguyên tử hóa
- 2,583085 eV
Hạt nhân
- Proton
- 8 So sánh Proton của tất cả nguyên tố →
- Neutron
- 8 So sánh Neutron của tất cả nguyên tố →
- Các đồng vị đã biết
- 18 So sánh Các đồng vị đã biết của tất cả nguyên tố →
- Đồng vị bền
- 3 So sánh Đồng vị bền của tất cả nguyên tố →
- Đồng vị bền nhất
- O-16
- Năm phát hiện
- 1771
Độ phổ biến
- Độ phổ biến (vỏ Trái Đất)
- 4,61e+5 mg/kg So sánh Độ phổ biến (vỏ Trái Đất) của tất cả nguyên tố →
- Độ phổ biến (đại dương)
- 8,57 × 105 mg/L So sánh Độ phổ biến (đại dương) của tất cả nguyên tố →
Cấu trúc tinh thể
- Hằng số mạng a
- 683 pm
Cấu trúc electron
- Số electron trong mỗi lớp
- 2, 6 So sánh Số electron trong mỗi lớp của tất cả nguyên tố →
Mã định danh
- Số CAS
- 7782-44-7 So sánh Số CAS của tất cả nguyên tố →
- Ký hiệu số hạng
- 3P2
- InChI
- InChI=1S/O
- Khóa InChI
- QVGXLLKOCUKJST-UHFFFAOYSA-N
Cấu hình electron Đo đạc
O: 2s² 2p⁴[He] 2s² 2p⁴1s² 2s² 2p⁴Mô hình nguyên tử
Các đồng vị khác nhau về số neutron, khối lượng và độ bền — không khác nhau về cấu hình electron của nguyên tử trung hòa.
Mô hình nguyên tử minh họa, không theo tỷ lệ.
Dấu vân tay nguyên tử
Phổ phát xạ / hấp thụ
Phân bố đồng vị
| Số khối | Khối lượng nguyên tử (u) | Độ phổ biến tự nhiên | Chu kỳ bán rã |
|---|---|---|---|
| 16 Bền | 15,99491461957 ± 0,00000000017 | 99,7570% | Bền |
| 17 Bền | 16,9991317565 ± 0,00000000069 | 0,0380% | Bền |
| 18 Bền | 17,99915961286 ± 0,00000000076 | 0,2050% | Bền |
Pha / Trạng thái
Lý do: cao hơn nhiệt độ sôi (-182,95 °C) một lượng 207,9 °C
Sơ đồ minh họa, không theo tỷ lệ
Điểm chuyển pha
Năng lượng chuyển pha
Năng lượng cần để làm nóng chảy 1 mol tại nhiệt độ nóng chảy
Năng lượng cần để hóa hơi 1 mol tại nhiệt độ sôi
Khối lượng riêng
Ở điều kiện chuẩn
Ước tính theo phương trình khí lý tưởng tại T hiện tại
Nâng cao
Phổ nguyên tử
Dữ liệu vạch phổ ?
| Ion | Điện tích | Tổng số vạch | Xác suất chuyển mức | Ký hiệu mức năng lượng |
|---|---|---|---|---|
| O I | 0 | 910 | 854 | 907 |
| O II | +1 | 1630 | 876 | 1630 |
| O III | +2 | 1005 | 974 | 974 |
| O IV | +3 | 1525 | 1521 | 1523 |
| O V | +4 | 391 | 385 | 385 |
| O VI | +5 | 157 | 126 | 157 |
| O VII | +6 | 189 | 188 | 189 |
| O VIII | +7 | 137 | 137 | 137 |
Dữ liệu mức năng lượng ?
| Ion | Điện tích | Mức năng lượng |
|---|---|---|
| O I | 0 | 614 |
| O II | +1 | 287 |
| O III | +2 | 188 |
| O IV | +3 | 219 |
| O V | +4 | 172 |
| O VI | +5 | 148 |
| O VII | +6 | 149 |
| O VIII | +7 | 149 |
Bán kính ion
| Điện tích | Phối trí | Spin | Bán kính |
|---|---|---|---|
| -2 | 2 | Không có | 135 pm |
| -2 | 3 | Không có | 136 pm |
| -2 | 4 | Không có | 138 pm |
| -2 | 6 | Không có | 140 pm |
| -2 | 8 | Không có | 142 pm |
Hợp chất
Đồng vị (3)
Oxygen has nine isotopes. Natural oxygen is a mixture of three isotopes.
| Số khối | Khối lượng nguyên tử (u) | Độ phổ biến tự nhiên | Chu kỳ bán rã | Kiểu phân rã | |
|---|---|---|---|---|---|
| 16 Bền | 15,99491461957 ± 0,00000000017 | 99,7570% ± 0,0160% | Bền | stable | |
| 17 Bền | 16,9991317565 ± 0,00000000069 | 0,0380% ± 0,0010% | Bền | stable | |
| 18 Bền | 17,99915961286 ± 0,00000000076 | 0,2050% ± 0,0140% | Bền | stable |
Vạch phổ
Đang hiển thị 50 trên 1013. Theo mặc định, chỉ hiển thị các vạch phổ có cường độ đã được đo.
| Bước sóng (nm) | Cường độ | Bậc ion hóa | Loại | Chuyển mức | Độ chính xác | Nguồn | |
|---|---|---|---|---|---|---|---|
| 615.8187 nm | 490 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).4d 5D* | Đo đạc | NIST | |
| 615.6778 nm | 450 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).4d 5D* | Đo đạc | NIST | |
| 700.223 nm | 450 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).4d 3D* | Đo đạc | NIST | |
| 725.4448 nm | 450 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).5s 3S* | Đo đạc | NIST | |
| 615.5971 nm | 400 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).4d 5D* | Đo đạc | NIST | |
| 645.5977 nm | 400 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).5s 5S* | Đo đạc | NIST | |
| 725.4154 nm | 400 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).5s 3S* | Đo đạc | NIST | |
| 645.4444 nm | 360 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).5s 5S* | Đo đạc | NIST | |
| 700.1922 nm | 360 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).4d 3D* | Đo đạc | NIST | |
| 645.3602 nm | 320 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).5s 5S* | Đo đạc | NIST | |
| 725.4531 nm | 320 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).5s 3S* | Đo đạc | NIST | |
| 715.6701 nm | 210 | O I | emission | 2s2.2p3.(2D*).3s 1D* → 2s2.2p3.(2D*).3p 1D | Đo đạc | NIST | |
| 396.1573 nm | 200 | O III | emission | 2s2.2p.(2P*).3p 1D → 2s2.2p.(2P*).3d 1F* | Đo đạc | NIST | |
| 533.0741 nm | 190 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).5d 5D* | Đo đạc | NIST | |
| 604.6438 nm | 190 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).6s 3S* | Đo đạc | NIST | |
| 394.72949 nm | 185 | O I | emission | 2s2.2p3.(4S*).3s 5S* → 2s2.2p3.(4S*).4p 5P | Đo đạc | NIST | |
| 394.74813 nm | 160 | O I | emission | 2s2.2p3.(4S*).3s 5S* → 2s2.2p3.(4S*).4p 5P | Đo đạc | NIST | |
| 532.9681 nm | 160 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).5d 5D* | Đo đạc | NIST | |
| 604.6233 nm | 160 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).6s 3S* | Đo đạc | NIST | |
| 394.75862 nm | 140 | O I | emission | 2s2.2p3.(4S*).3s 5S* → 2s2.2p3.(4S*).4p 5P | Đo đạc | NIST | |
| 543.6862 nm | 135 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).6s 5S* | Đo đạc | NIST | |
| 559.789 nm | 130 | O V | emission | 1s2.2s.3p 3P* → 1s2.2s.3d 3D | Đo đạc | NIST | |
| 650.024 nm | 130 | O V | emission | 1s2.2p.(2P*<3/2>).3p 3D → 1s2.2p.(2P*<3/2>).3d 3F* | Đo đạc | NIST | |
| 382.34136 nm | 120 | O I | emission | 2s2.2p3.(2D*).3s 3D* → 2s2.2p3.(2P*).3p 3D | Đo đạc | NIST | |
| 557.7339 nm | 120 | O I | emission | 2s2.2p4 1D → 2s2.2p4 1S | Đo đạc | NIST | |
| 543.5775 nm | 110 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).6s 5S* | Đo đạc | NIST | |
| 559.2252 nm | 110 | O III | emission | 2s2.2p.(2P*).3s 1P* → 2s2.2p.(2P*).3p 1P | Đo đạc | NIST | |
| 604.6495 nm | 110 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(4S*).6s 3S* | Đo đạc | NIST | |
| 395.46067 nm | 100 | O I | emission | 2s2.2p3.(4S*).3p 3P → 2s2.2p3.(2P*).3s 3P* | Đo đạc | NIST | |
| 412.396 nm | 100 | O V | emission | 1s2.2p.(2P*<3/2>).3s 3P* → 1s2.2p.(2P*<3/2>).3p 3D | Đo đạc | NIST | |
| 436.8258 nm | 100 | O I | emission | 2s2.2p3.(4S*).3s 3S* → 2s2.2p3.(4S*).4p 3P | Đo đạc | NIST | |
| 543.5178 nm | 90 | O I | emission | 2s2.2p3.(4S*).3p 5P → 2s2.2p3.(4S*).6s 5S* | Đo đạc | NIST | |
| 423.3274 nm | 80 | O I | emission | 2s2.2p3.(4S*).4p 3P → 2s2.2p3.(2D*<3/2>).3d 3P* | Đo đạc | NIST | |
| 441.4899 nm | 27 | O II | emission | 2s2.2p2.(3P).3s 2P → 2s2.2p2.(3P).3p 2D* | Đo đạc | NIST | |
| 672.1388 nm | 26 | O II | emission | 2s2.2p2.(3P).3s 2P → 2s2.2p2.(3P).3p 2S* | Đo đạc | NIST | |
| 441.6975 nm | 25 | O II | emission | 2s2.2p2.(3P).3s 2P → 2s2.2p2.(3P).3p 2D* | Đo đạc | NIST | |
| 397.3256 nm | 24 | O II | emission | 2s2.2p2.(3P).3s 2P → 2s2.2p2.(3P).3p 2P* | Đo đạc | NIST | |
| 407.58617 nm | 24 | O II | emission | 2s2.2p2.(3P).3p 4D* → 2s2.2p2.(3P).3d 4F | Đo đạc | NIST | |
| 464.91347 nm | 24 | O II | emission | 2s2.2p2.(3P).3s 4P → 2s2.2p2.(3P).3p 4D* | Đo đạc | NIST | |
| 664.1031 nm | 24 | O II | emission | 2s2.2p2.(3P).3s 2P → 2s2.2p2.(3P).3p 2S* | Đo đạc | NIST | |
| 407.21525 nm | 23 | O II | emission | 2s2.2p2.(3P).3p 4D* → 2s2.2p2.(3P).3d 4F | Đo đạc | NIST | |
| 434.9426 nm | 23 | O II | emission | 2s2.2p2.(3P).3s 4P → 2s2.2p2.(3P).3p 4P* | Đo đạc | NIST | |
| 411.92165 nm | 22 | O II | emission | 2s2.2p2.(3P).3p 4P* → 2s2.2p2.(3P).3d 4D | Đo đạc | NIST | |
| 459.0974 nm | 22 | O II | emission | 2s2.2p2.(1D).3s 2D → 2s2.2p2.(1D).3p 2F* | Đo đạc | NIST | |
| 464.18103 nm | 22 | O II | emission | 2s2.2p2.(3P).3s 4P → 2s2.2p2.(3P).3p 4D* | Đo đạc | NIST | |
| 689.5102 nm | 22 | O II | emission | 2s2.2p2.(3P).3d 4F → 2s2.2p2.(3P).4p 4D* | Đo đạc | NIST | |
| 406.98819 nm | 21 | O II | emission | 2s2.2p2.(3P).3p 4D* → 2s2.2p2.(3P).3d 4F | Đo đạc | NIST | |
| 435.126 nm | 21 | O II | emission | 2s2.2p2.(1D).3s 2D → 2s2.2p2.(1D).3p 2D* | Đo đạc | NIST | |
| 466.16324 nm | 21 | O II | emission | 2s2.2p2.(3P).3s 4P → 2s2.2p2.(3P).3p 4D* | Đo đạc | NIST | |
| 470.5346 nm | 21 | O II | emission | 2s2.2p2.(3P).3p 2D* → 2s2.2p2.(3P).3d 2F | Đo đạc | NIST |
Tính chất mở rộng
Bán kính cộng hóa trị (mở rộng)
- Bán kính cộng hóa trị (Pyykkö)
- 63 pm
- Bán kính cộng hóa trị (Pyykkö, liên kết đôi)
- 57 pm
- Bán kính cộng hóa trị (Pyykkö, liên kết ba)
- 53 pm
- Bán kính cộng hóa trị (Bragg)
- 65 pm
Bán kính van der Waals
- Bondi
- 152 pm
- Batsanov
- 155 pm
- Alvarez
- 150 pm
- UFF
- 350 pm
- MM3
- 182 pm
- Dreiding
- 340,46 pm
- Rowland–Taylor
- 158 pm
Bán kính nguyên tử và kim loại
- Bán kính nguyên tử (Rahm)
- 171 pm
Các thang đánh số
- Mendeleev
- 99
- Pettifor
- 101
- Glawe
- 97
Các thang độ âm điện
- Ghosh
- 0
- Gunnarsson–Lundqvist
- 8
- Robles–Bartolotti
- 6
Độ phân cực hóa và tán sắc
- Độ phân cực hóa lưỡng cực
- 5,3 a.u.
- Độ phân cực hóa lưỡng cực (độ không đảm bảo)
- 0,2 a.u.
- C₆
- 15,6 Ha·Bohr6
- C₆ (Gould–Bučko)
- 16,7 Ha·Bohr6
Ái lực hóa học
- Ái lực proton
- 485,2 kJ/mol
- Độ bazơ pha khí
- 459,6 kJ/mol
Chuyển pha và các dạng thù hình
| Nhiệt độ nóng chảy | 54,36 K |
| Nhiệt độ sôi | 90,19 K |
| Điểm tới hạn (nhiệt độ) | 154,58 K |
| Điểm tới hạn (áp suất) | 5,04 MPa |
| Điểm ba (nhiệt độ) | 54,36 K |
| Điểm ba (áp suất) | 0,15 kPa |
Phân loại trạng thái oxi hóa
Dữ liệu tham khảo chuyên sâu
Hằng số chắn (3)
| n | Orbital | σ |
|---|---|---|
| 1 | s | 0,3421 |
| 2 | p | 3,5468 |
| 2 | s | 3,5084 |
Chi tiết bán kính tinh thể (5)
| Điện tích | CN | Spin | rcrystal (pm) | Nguồn gốc |
|---|---|---|---|---|
| -2 | II | 121 | ||
| -2 | III | 122 | ||
| -2 | IV | 124 | ||
| -2 | VI | 126 | ||
| -2 | VIII | 128 |
Các kiểu phân rã đồng vị (22)
| Đồng vị | Chế độ | Cường độ |
|---|---|---|
| 11 | 2p | 100% |
| 12 | 2p | 100% |
| 13 | B+ | 100% |
| 13 | B+p | 10,9% |
| 14 | B+ | 100% |
| 15 | B+ | 100% |
| 19 | B- | 100% |
| 20 | B- | 100% |
| 21 | B- | 100% |
| 21 | B-n | — |
Hệ số tán xạ tia X (502)
| Năng lượng (eV) | f₁ | f₂ |
|---|---|---|
| 10 | — | 0,70328 |
| 10,1617 | — | 0,70723 |
| 10,3261 | — | 0,70738 |
| 10,4931 | — | 0,70753 |
| 10,6628 | — | 0,70768 |
| 10,8353 | — | 0,70783 |
| 11,0106 | — | 0,70798 |
| 11,1886 | — | 0,70813 |
| 11,3696 | — | 0,70828 |
| 11,5535 | — | 0,70843 |
Dữ liệu bổ sung
Estimated Crustal Abundance
The estimated element abundance in the earth's crust.
4.61×105 milligrams per kilogram
Tài liệu tham khảo (1)
Estimated Oceanic Abundance
The estimated element abundance in the earth's oceans.
8.57×105 milligrams per liter
Tài liệu tham khảo (1)
Sources
Sources of this element.
Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, the process once thought to give the sun and stars their energy. Oxygen under excited conditions is responsible for the bright red and yellow-green colors of the Aurora Borealis.
A gaseous element, oxygen forms 21% of the atmosphere by volume and is obtained by liquefaction and fractional distillation. The atmosphere of Mars contains about 0.15% oxygen. The element and its compounds make up 49.2%, by weight, of the earth's crust. About two thirds of the human body and nine tenths of water is oxygen.
In the laboratory it can be prepared by the electrolysis of water or by heating potassium chlorate with manganese dioxide as a catalyst.
Tài liệu tham khảo (1)
- [6] Oxygen https://periodic.lanl.gov/8.shtml
Isotopes in Forensic Science and Anthropology
Information on the use of this element's isotopes in forensic science and anthropology.
Measurements of relative 18O abundances have been used to determine the breeding grounds of many species of migrant songbirds. These species of songbirds only grow their feathers before migration, and they grow them on or close to their breeding grounds. Therefore, the isotopic composition of a bird’s feathers correlates to the isotopic signature of the growing season’s precipitation [19] K. A. Hobson. Oecologia120, 314 (1999)., [20] K. A. Hobson, L. I. Wassenaar. Oecologia.109, 142 (1996)..
Measurements of relative 18O abundances of human hair or nail samples collected at archeological sites have been used to determine the geographic region in which a subject lived based on the oxygen isotopic composition of the water they drank (Fig. IUPAC.8.3). This is possible because hair stores a daily record of oxygen isotopic composition of intake water, which correlates to local meteoric water [92] D. M. O’Brien, M. J. Woller. Rapid Commun. Mass Spectrom.21, 2422 (2007)..
Tài liệu tham khảo (7)
- [14] W. Dansgaard. Tellus16, 436 (1964).
- [15] I. D. Clark, P. Fritz. Environmental Isotopes in Hydrogeology, p. 328, Lewis Publishers, New York (1997).
- [19] K. A. Hobson. Oecologia120, 314 (1999).
- [20] K. A. Hobson, L. I. Wassenaar. Oecologia.109, 142 (1996).
- [92] D. M. O’Brien, M. J. Woller. Rapid Commun. Mass Spectrom.21, 2422 (2007).
- [93] I. Fraser, W. Meier-Augenstein, R. M. Kalin. Rapid Commun. Mass Spectrom.20, 1109 (2006).
- [4] IUPAC Periodic Table of the Elements and Isotopes (IPTEI) https://doi.org/10.1515/pac-2015-0703
Tài liệu tham khảo
(9)
Data deposited in or computed by PubChem
The half-life and atomic mass data was provided by the Atomic Mass Data Center at the International Atomic Energy Agency.
Element data are cited from the Atomic weights of the elements (an IUPAC Technical Report). The IUPAC periodic table of elements can be found at https://iupac.org/what-we-do/periodic-table-of-elements/. Additional information can be found within IUPAC publication doi:10.1515/pac-2015-0703 Copyright © 2020 International Union of Pure and Applied Chemistry.
The information are cited from Pure Appl. Chem. 2018; 90(12): 1833-2092, https://doi.org/10.1515/pac-2015-0703.
Thomas Jefferson National Accelerator Facility (Jefferson Lab) is one of 17 national laboratories funded by the U.S. Department of Energy. The lab's primary mission is to conduct basic research of the atom's nucleus using the lab's unique particle accelerator, known as the Continuous Electron Beam Accelerator Facility (CEBAF). For more information visit https://www.jlab.org/
The periodic table at the LANL (Los Alamos National Laboratory) contains basic element information together with the history, source, properties, use, handling and more. The provenance data may be found from the link under the source name.
The periodic table contains NIST's critically-evaluated data on atomic properties of the elements. The provenance data that include data for atomic spectroscopy, X-ray and gamma ray, radiation dosimetry, nuclear physics, and condensed matter physics may be found from the link under the source name. Ref: https://www.nist.gov/pml/atomic-spectra-database
This section provides all form of data related to element Oxygen.
The element property data was retrieved from publications.