Oxygen-16: Difference between revisions
Grammar |
m Removed invalid parameter |
||
| Line 24: | Line 24: | ||
| excess_energy = −4737.00135(16){{AME2016 II|ref|pages=030003-8}} |
| excess_energy = −4737.00135(16){{AME2016 II|ref|pages=030003-8}} |
||
| error1 = |
| error1 = |
||
| binding_energy_per_nucleon = 7976.206{{AME2016 II|ref|pages=030003-8}} |
|||
| error2 =}} |
| error2 =}} |
||
'''Oxygen-16''' (<sup>16</sup>O) is a [[stable isotope|stable]] [[isotopes of oxygen|isotope of oxygen]], having 8 [[neutron]]s and 8 [[proton]]s in its [[atomic nucleus|nucleus]]. It has a mass of {{val|15.99491461956|u=u}}. Oxygen-16 is the most abundant isotope of oxygen and accounts for 99.762% of oxygen's [[natural abundance]].<ref>{{cite web|url=http://www.ncsu.edu/ncsu/pams/chem/msf/pdf/IsotopicMass_NaturalAbundance.pdf |title=Table of Isotopic Masses and Natural Abundances |date=1999 |format=PDF}}</ref> The relative and absolute abundance of <sup>16</sup>O are high because it is a principal product of [[stellar evolution]] and because it is a [[primordial isotope]], meaning it can be made by stars that were [[Population III stars|initially made exclusively of hydrogen]]. Most <sup>16</sup>O is synthesized at the end of the [[helium fusion]] process in stars; the [[triple-alpha process]] creates <sup>12</sup>C, which captures an additional <sup>4</sup>He to make <sup>16</sup>O. The [[neon-burning process]] creates additional <sup>16</sup>O. |
'''Oxygen-16''' (<sup>16</sup>O) is a [[stable isotope|stable]] [[isotopes of oxygen|isotope of oxygen]], having 8 [[neutron]]s and 8 [[proton]]s in its [[atomic nucleus|nucleus]]. It has a mass of {{val|15.99491461956|u=u}}. Oxygen-16 is the most abundant isotope of oxygen and accounts for 99.762% of oxygen's [[natural abundance]].<ref>{{cite web|url=http://www.ncsu.edu/ncsu/pams/chem/msf/pdf/IsotopicMass_NaturalAbundance.pdf |title=Table of Isotopic Masses and Natural Abundances |date=1999 |format=PDF}}</ref> The relative and absolute abundance of <sup>16</sup>O are high because it is a principal product of [[stellar evolution]] and because it is a [[primordial isotope]], meaning it can be made by stars that were [[Population III stars|initially made exclusively of hydrogen]]. Most <sup>16</sup>O is synthesized at the end of the [[helium fusion]] process in stars; the [[triple-alpha process]] creates <sup>12</sup>C, which captures an additional <sup>4</sup>He to make <sup>16</sup>O. The [[neon-burning process]] creates additional <sup>16</sup>O. |
||
Revision as of 19:25, 23 May 2020
 | This article needs additional citations for verification. (February 2020) |
| General | |
|---|---|
| Symbol | 16O |
| Names | oxygen-16, 16O, O-16 |
| Protons (Z) | 8 |
| Neutrons (N) | 8 |
| Nuclide data | |
| Natural abundance | 99.76% |
| Half-life (t1/2) | stable |
| Isotope mass | 15.99491461956 Da |
| Spin | 0 |
| Excess energy | −4737.00135(16)[1] keV |
| Isotopes of oxygen Complete table of nuclides | |
Oxygen-16 (16O) is a stable isotope of oxygen, having 8 neutrons and 8 protons in its nucleus. It has a mass of 15.99491461956 u. Oxygen-16 is the most abundant isotope of oxygen and accounts for 99.762% of oxygen's natural abundance.[2] The relative and absolute abundance of 16O are high because it is a principal product of stellar evolution and because it is a primordial isotope, meaning it can be made by stars that were initially made exclusively of hydrogen. Most 16O is synthesized at the end of the helium fusion process in stars; the triple-alpha process creates 12C, which captures an additional 4He to make 16O. The neon-burning process creates additional 16O.
Solid samples (organic and inorganic) for 16O studies are usually stored in silver cups and measured with pyrolysis and mass spectrometry[3]. Researchers need to avoid improper or prolonged storage of the samples for accurate measurements[3].
References
- ^ Wang, M.; Audi, G.; Kondev, F. G.; Huang, W. J.; Naimi, S.; Xu, X. (2017). "The AME2016 atomic mass evaluation (II). Tables, graphs, and references" (PDF). Chinese Physics C. 41 (3): 030003–8. doi:10.1088/1674-1137/41/3/030003.
- ^ "Table of Isotopic Masses and Natural Abundances" (PDF). 1999.
- ^ a b Tsang, Man-Yin; Yao, Weiqi; Tse, Kevin (2020). Kim, Il-Nam (ed.). "Oxidized silver cups can skew oxygen isotope results of small samples". Experimental Results. 1: e12. doi:10.1017/exp.2020.15. ISSN 2516-712X.
 | This isotope-related article is a stub. You can help Wikipedia by expanding it. |