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en.wikipedia.org/wiki/Relative_atomic_mass

The IUPAC commission CIAAW maintains a expectation-interval value for relative atomic mass (or atomic weight) on ...

www.school-for-champions.com/chemistry/atomic_weight.htm

Atomic Weight in Chemistry. by Ron Kurtus (revised 30 August 2012). The atomic weight—or more correctly stated: relative atomic mass—of an element is a ...

www.thoughtco.com/definition-of-atomic-weight-604378

Mar 7, 2017 ... This is the atomic weight definition in chemistry, as well as synonyms and examples of atomic weight.

dl.clackamas.edu/ch104-03/relative.htm

Relative Atomic Weights. Let's look at some of the things you have already learned in this course. You know that elements can combine with one another to form ...

www.britannica.com/science/atomic-weight

Atomic weight, also called relative atomic mass, ratio of the average mass of a chemical element's atoms to some standard. Since 1961 the standard unit of ...

www.khanacademy.org/science/chemistry/atomic-structure-and-properties/introduction-to-the-atom/v/atomic-weight-and-atomic-mass

Atomic weight is the average mass of all of the naturally-occurring isotopes of an element. ... Atomic weight is an outdated way to refer to relative atomic mass.

www.livescience.com/20581-weigh-atom.html

Sep 11, 2017 ... Then, they primarily measured the weights of the atoms that composed various elements in terms of their relative masses, rather than their ...

sciencing.com/difference-mass-average-atomic-mass-8693786.html

Apr 25, 2017 ... The neutrons have almost no effect on the atom's chemical properties, but do affect the atom's weight. Relative and average atomic mass both ...

www.encyclopedia.com/science-and-technology/chemistry/chemistry-general/atomic-weight

Atomic weights were formerly determined directly by chemical means; now a mass spectrograph is usually employed. The atomic mass and relative abundance ...