| 词汇 | relative-atomic-mass |
| 释义 | relative atomic mass noun[ C or U ] chemistry specializeduk /ˌrel.ə.tɪv ə ˈtɒm.ɪk ˈmæs/ us /ˌrel.ə.t̬ɪv ə ˈtɑː.mɪk ˈmæs/(alsoatomic weight) the mass of an atom of a particular chemical element, usually expressed in atomic mass units相对原子质量，原子量（某种特定化学元素一个原子的质量，通常以原子质量单位表示） Compare atomic massspecialized Physics: atoms, molecules & sub-atomic particles acceptor alpha particle anti-radical antilepton antimatter antineutrino benzene ring beta decay beta particle hadron Higgs boson interatomic interelectronic interionic molecularly monatomic multi-molecular multiparticle muon positron Examples of relative atomic massrelative atomic mass For the natural isotopic composition of each element it shows "name", "atomic number", "symbol", "atomic weight" (or relativeatomicmass) and a link to the element's "isotopes". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is numerically equal to the relativeatomicmass (or atomic weight) in grams. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, atomic weight, ie, relativeatomicmass, is a dimensionless quantity, and can not take the units of grams per mole. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Si, which has a relativeatomicmass of. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its isotopic composition would be measured with a mass spectrometer to determine its average relativeatomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The term "atomic weight" is being phased out slowly and being replaced by "relativeatomicmass", in most current usage. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The relativeatomicmass (a weighted average) of these isotopes is the atomic weight listed for the element in the periodic table. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is fixed by the definitions of the mole and of relativeatomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another way of stating this, is that, for these elements, the relativeatomicmass and atomic mass are the same. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The electron relativeatomicmass also enters into the calculation of all other relative atomic masses. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This gives chlorine a relativeatomicmass of 35.5 (actually 35.4527 g/mol). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Objectors to the name usually prefer the term relativeatomicmass (not to be confused with atomic mass). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The calculation is exemplified for silicon, whose relativeatomicmass is especially important in metrology. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, every atom of oxygen-16 is expected to have exactly the same atomic mass (relativeatomicmass) as every other atom of oxygen-16. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Both the terms "relativeatomicmass" and "atomic weight" are sometimes loosely used to refer to a technically different standardized expectation value, called the standard atomic weight. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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