| atomic weight |
The atomic weight of an atom is a measure of how much mass an atom has. The atomic weight is calculated by adding the number of protons and neutrons together. Atomic masses are not listed as whole numbers on the periodic table because atoms can come in forms with different amounts of neutrons. The atomic weight reported for any particular element is an average weight of all the known forms of that element.
출처: www.biologylessons.sdsu.edu/classes/lab2/glossary....
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| atomic weight |
average of the mass numbers of all of the isotopes of an element.
출처: paramedicine.wikispaces.org/Medical+Terminology
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| atomic weight |
Also atomic mass, relative atomic mass (Symbol A). the average weight of a sample of an element expressed in atomic weight units.
출처: www.curtin.edu.au/curtin/centre/waisrc/OKLO/Access...
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| atomic weight |
The average weight (or mass) of all the isotopes of an element, as determined from the proportions in which they are present in a given element, compared with the mass of the 12 isotope of carbon (taken as precisely 12.000), that is the official international standard; measured in daltons.
출처: ilrdss.sws.uiuc.edu/glossary/glossary_allresults.a...
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| atomic weight u. |
atomic mass u.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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